CVE-2018-20533

libsolv: NULL pointer dereference in function testcase_str2dep_complex

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

There is a NULL pointer dereference at ext/testcase.c (function testcase_str2dep_complex) in libsolvext.a in libsolv through 0.7.2 that will cause a denial of service.

Hay una desreferencia de puntero NULL en ext/testcase.c (función testcase_str2dep_complex) en libsolvext.a en libsolv hasta la versión 0.7.2 que provocará una denegación de servicio (DoS).

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-12-27 CVE Reserved
2018-12-28 CVE Published
2024-05-20 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1652599	2024-08-05

URL	Date	SRC
https://github.com/openSUSE/libsolv/pull/291	2019-08-06

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00057.html	2019-08-06
https://access.redhat.com/errata/RHSA-2019:2290	2019-08-06
https://usn.ubuntu.com/3916-1	2019-08-06
https://access.redhat.com/security/cve/CVE-2018-20533	2019-08-06
https://bugzilla.redhat.com/show_bug.cgi?id=1665535	2019-08-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Opensuse Search vendor "Opensuse"		Libsolv Search vendor "Opensuse" for product "Libsolv"				<= 0.7.2 Search vendor "Opensuse" for product "Libsolv" and version " <= 0.7.2"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10"		-		Affected