CVE-2015-3622

libtasn1: heap overflow flaw in _asn1_extract_der_octet()

Severity Score

5.9

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.5 allows remote attackers to cause a denial of service (out-of-bounds heap read) via a crafted certificate.

La función _asn1_extract_der_octet en lib/decoding.c en GNU Libtasn1 anterior a 4.5 permite a atacantes remotos causar una denegación de servicio (lectura de memoria dinámica fuera de rango) a través de un certificado manipulado.

A heap-based buffer overflow flaw was found in the way the libtasn1 library decoded certain DER-encoded inputs. A specially crafted DER-encoded input could cause an application using libtasn1 to perform an invalid read, causing the application to crash.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

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

2015-04-30 CVE Reserved
2015-05-08 CVE Published
2024-08-06 CVE Updated
2024-08-06 First Exploit
2024-11-05 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-122: Heap-based Buffer Overflow

CAPEC

References (16)

URL	Tag	Source
http://www.securityfocus.com/bid/74419	Vdb Entry
http://www.securitytracker.com/id/1032246	Vdb Entry
https://lists.gnu.org/archive/html/help-libtasn1/2015-04/msg00000.html	Mailing List

URL	Date	SRC
http://packetstormsecurity.com/files/131711/libtasn1-Heap-Overflow.html	2024-08-06
http://seclists.org/fulldisclosure/2015/Apr/109	2024-08-06

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158225.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2015-08/msg00014.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2016-06/msg00047.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2016-06/msg00097.html	2018-10-30
http://www.debian.org/security/2015/dsa-3256	2018-10-30
http://www.mandriva.com/security/advisories?name=MDVSA-2015:232	2018-10-30
http://www.ubuntu.com/usn/USN-2604-1	2018-10-30
https://access.redhat.com/errata/RHSA-2017:1860	2018-10-30
https://security.gentoo.org/glsa/201509-04	2018-10-30
https://access.redhat.com/security/cve/CVE-2015-3622	2017-08-01
https://bugzilla.redhat.com/show_bug.cgi?id=1218141	2017-08-01

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				13.2 Search vendor "Opensuse" for product "Opensuse" and version "13.2"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				21 Search vendor "Fedoraproject" for product "Fedora" and version "21"		-		Affected
Gnu Search vendor "Gnu"		Libtasn1 Search vendor "Gnu" for product "Libtasn1"				<= 4.4 Search vendor "Gnu" for product "Libtasn1" and version " <= 4.4"		-		Affected