CVE-2024-7264

ASN.1 date parser overread

Severity Score

6.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

libcurl's ASN1 parser code has the `GTime2str()` function, used for parsing an
ASN.1 Generalized Time field. If given an syntactically incorrect field, the
parser might end up using -1 for the length of the *time fraction*, leading to
a `strlen()` getting performed on a pointer to a heap buffer area that is not
(purposely) null terminated. This flaw most likely leads to a crash, but can also lead to heap contents
getting returned to the application when
[CURLINFO_CERTINFO](https://curl.se/libcurl/c/CURLINFO_CERTINFO.html) is used.

A flaw was found in libcurl, where libcurl's ASN1 parser code has the `GTime2str()` function, used for parsing an ASN.1 Generalized Time field. If a syntactically incorrect field is given, the parser can use -1 for the length of the *time fraction*, leading to a `strlen()` performed on a pointer to a heap buffer area that is not purposely NULL terminated.

libcurl's ASN1 parser code has the `GTime2str()` function, used for parsing an ASN.1 Generalized Time field. If given an syntactically incorrect field, the parser might end up using -1 for the length of the *time fraction*, leading to a `strlen()` getting performed on a pointer to a heap buffer area that is not (purposely) null terminated. This flaw most likely leads to a crash, but can also lead to heap contents getting returned to the application when [CURLINFO_CERTINFO](https://curl.se/libcurl/c/CURLINFO_CERTINFO.html) is used.

USN-6944-1 fixed CVE-2024-7264 for Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. This update provides the corresponding fix for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. Dov Murik discovered that curl incorrectly handled parsing ASN.1 Generalized Time fields. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly obtain sensitive memory contents.

*Credits: Dov Murik (Transmit Security), Stefan Eissing

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-07-30 CVE Reserved
2024-07-31 CVE Published
2025-02-13 CVE Updated
2025-05-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (6)

URL	Tag	Source
https://curl.se/docs/CVE-2024-7264.html
https://curl.se/docs/CVE-2024-7264.json
https://hackerone.com/reports/2629968
http://www.openwall.com/lists/oss-security/2024/07/31/1

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-7264	2025-02-19
https://bugzilla.redhat.com/show_bug.cgi?id=2301888	2025-02-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.9.0 Search vendor "Curl" for product "Curl" and version "8.9.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.8.0 Search vendor "Curl" for product "Curl" and version "8.8.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.7.1 Search vendor "Curl" for product "Curl" and version "8.7.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.7.0 Search vendor "Curl" for product "Curl" and version "8.7.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.6.0 Search vendor "Curl" for product "Curl" and version "8.6.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.5.0 Search vendor "Curl" for product "Curl" and version "8.5.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.4.0 Search vendor "Curl" for product "Curl" and version "8.4.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.3.0 Search vendor "Curl" for product "Curl" and version "8.3.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.2.1 Search vendor "Curl" for product "Curl" and version "8.2.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.2.0 Search vendor "Curl" for product "Curl" and version "8.2.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.1.2 Search vendor "Curl" for product "Curl" and version "8.1.2"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.1.1 Search vendor "Curl" for product "Curl" and version "8.1.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.1.0 Search vendor "Curl" for product "Curl" and version "8.1.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.0.1 Search vendor "Curl" for product "Curl" and version "8.0.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				8.0.0 Search vendor "Curl" for product "Curl" and version "8.0.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.88.1 Search vendor "Curl" for product "Curl" and version "7.88.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.88.0 Search vendor "Curl" for product "Curl" and version "7.88.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.87.0 Search vendor "Curl" for product "Curl" and version "7.87.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.86.0 Search vendor "Curl" for product "Curl" and version "7.86.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.85.0 Search vendor "Curl" for product "Curl" and version "7.85.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.84.0 Search vendor "Curl" for product "Curl" and version "7.84.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.83.1 Search vendor "Curl" for product "Curl" and version "7.83.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.83.0 Search vendor "Curl" for product "Curl" and version "7.83.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.82.0 Search vendor "Curl" for product "Curl" and version "7.82.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.81.0 Search vendor "Curl" for product "Curl" and version "7.81.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.80.0 Search vendor "Curl" for product "Curl" and version "7.80.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.79.1 Search vendor "Curl" for product "Curl" and version "7.79.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.79.0 Search vendor "Curl" for product "Curl" and version "7.79.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.78.0 Search vendor "Curl" for product "Curl" and version "7.78.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.77.0 Search vendor "Curl" for product "Curl" and version "7.77.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.76.1 Search vendor "Curl" for product "Curl" and version "7.76.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.76.0 Search vendor "Curl" for product "Curl" and version "7.76.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.75.0 Search vendor "Curl" for product "Curl" and version "7.75.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.74.0 Search vendor "Curl" for product "Curl" and version "7.74.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.73.0 Search vendor "Curl" for product "Curl" and version "7.73.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.72.0 Search vendor "Curl" for product "Curl" and version "7.72.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.71.1 Search vendor "Curl" for product "Curl" and version "7.71.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.71.0 Search vendor "Curl" for product "Curl" and version "7.71.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.70.0 Search vendor "Curl" for product "Curl" and version "7.70.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.69.1 Search vendor "Curl" for product "Curl" and version "7.69.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.69.0 Search vendor "Curl" for product "Curl" and version "7.69.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.68.0 Search vendor "Curl" for product "Curl" and version "7.68.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.67.0 Search vendor "Curl" for product "Curl" and version "7.67.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.66.0 Search vendor "Curl" for product "Curl" and version "7.66.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.65.3 Search vendor "Curl" for product "Curl" and version "7.65.3"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.65.2 Search vendor "Curl" for product "Curl" and version "7.65.2"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.65.1 Search vendor "Curl" for product "Curl" and version "7.65.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.65.0 Search vendor "Curl" for product "Curl" and version "7.65.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.64.1 Search vendor "Curl" for product "Curl" and version "7.64.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.64.0 Search vendor "Curl" for product "Curl" and version "7.64.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.63.0 Search vendor "Curl" for product "Curl" and version "7.63.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.62.0 Search vendor "Curl" for product "Curl" and version "7.62.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.61.1 Search vendor "Curl" for product "Curl" and version "7.61.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.61.0 Search vendor "Curl" for product "Curl" and version "7.61.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.60.0 Search vendor "Curl" for product "Curl" and version "7.60.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.59.0 Search vendor "Curl" for product "Curl" and version "7.59.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.58.0 Search vendor "Curl" for product "Curl" and version "7.58.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.57.0 Search vendor "Curl" for product "Curl" and version "7.57.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.56.1 Search vendor "Curl" for product "Curl" and version "7.56.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.56.0 Search vendor "Curl" for product "Curl" and version "7.56.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.55.1 Search vendor "Curl" for product "Curl" and version "7.55.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.55.0 Search vendor "Curl" for product "Curl" and version "7.55.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.54.1 Search vendor "Curl" for product "Curl" and version "7.54.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.54.0 Search vendor "Curl" for product "Curl" and version "7.54.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.53.1 Search vendor "Curl" for product "Curl" and version "7.53.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.53.0 Search vendor "Curl" for product "Curl" and version "7.53.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.52.1 Search vendor "Curl" for product "Curl" and version "7.52.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.52.0 Search vendor "Curl" for product "Curl" and version "7.52.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.51.0 Search vendor "Curl" for product "Curl" and version "7.51.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.50.3 Search vendor "Curl" for product "Curl" and version "7.50.3"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.50.2 Search vendor "Curl" for product "Curl" and version "7.50.2"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.50.1 Search vendor "Curl" for product "Curl" and version "7.50.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.50.0 Search vendor "Curl" for product "Curl" and version "7.50.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.49.1 Search vendor "Curl" for product "Curl" and version "7.49.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.49.0 Search vendor "Curl" for product "Curl" and version "7.49.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.48.0 Search vendor "Curl" for product "Curl" and version "7.48.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.47.1 Search vendor "Curl" for product "Curl" and version "7.47.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.47.0 Search vendor "Curl" for product "Curl" and version "7.47.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.46.0 Search vendor "Curl" for product "Curl" and version "7.46.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.45.0 Search vendor "Curl" for product "Curl" and version "7.45.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.44.0 Search vendor "Curl" for product "Curl" and version "7.44.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.43.0 Search vendor "Curl" for product "Curl" and version "7.43.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.42.1 Search vendor "Curl" for product "Curl" and version "7.42.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.42.0 Search vendor "Curl" for product "Curl" and version "7.42.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.41.0 Search vendor "Curl" for product "Curl" and version "7.41.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.40.0 Search vendor "Curl" for product "Curl" and version "7.40.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.39.0 Search vendor "Curl" for product "Curl" and version "7.39.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.38.0 Search vendor "Curl" for product "Curl" and version "7.38.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.37.1 Search vendor "Curl" for product "Curl" and version "7.37.1"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.37.0 Search vendor "Curl" for product "Curl" and version "7.37.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.36.0 Search vendor "Curl" for product "Curl" and version "7.36.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.35.0 Search vendor "Curl" for product "Curl" and version "7.35.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.34.0 Search vendor "Curl" for product "Curl" and version "7.34.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.33.0 Search vendor "Curl" for product "Curl" and version "7.33.0"		en		Affected
Curl Search vendor "Curl"		Curl Search vendor "Curl" for product "Curl"				7.32.0 Search vendor "Curl" for product "Curl" and version "7.32.0"		en		Affected