CVE-2017-5336

gnutls: Stack overflow in cdk_pk_get_keyid

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Stack-based buffer overflow in the cdk_pk_get_keyid function in lib/opencdk/pubkey.c in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have unspecified impact via a crafted OpenPGP certificate.

El desbordamiento de búfer basado en la pila en la función cdk_pk_get_keyid en lib/opencdk/pubkey.c en GnuTLS en versiones anteriores a 3.3.26 y 3.5.x en versiones anteriores a 3.5.8 permite a atacantes remotos tener un impacto no especificado a través de un certificado OpenPGP manipulado.

Stefan Buehler discovered that GnuTLS incorrectly verified the serial length of OCSP responses. A remote attacker could possibly use this issue to bypass certain certificate validation measures. This issue only applied to Ubuntu 16.04 LTS. Shi Lei discovered that GnuTLS incorrectly handled certain warning alerts. A remote attacker could possibly use this issue to cause GnuTLS to hang, resulting in a denial of service. This issue has only been addressed in Ubuntu 16.04 LTS and Ubuntu 16.10. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-01-10 CVE Reserved
2017-01-13 CVE Published
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-121: Stack-based Buffer Overflow

CAPEC

References (13)

URL	Tag	Source
http://www.securityfocus.com/bid/95377	Third Party Advisory
http://www.securitytracker.com/id/1037576	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2017/01/10/7	2018-10-30
http://www.openwall.com/lists/oss-security/2017/01/11/4	2018-10-30
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=340	2018-10-30
https://gitlab.com/gnutls/gnutls/commit/5140422e0d7319a8e2fe07f02cbcafc4d6538732	2018-10-30
https://security.gentoo.org/glsa/201702-04	2018-10-30

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html	2018-10-30
http://rhn.redhat.com/errata/RHSA-2017-0574.html	2018-10-30
https://access.redhat.com/errata/RHSA-2017:2292	2018-10-30
https://gnutls.org/security.html#GNUTLS-SA-2017-2	2018-10-30
https://access.redhat.com/security/cve/CVE-2017-5336	2017-08-01
https://bugzilla.redhat.com/show_bug.cgi?id=1412236	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"		Leap Search vendor "Opensuse" for product "Leap"				42.1 Search vendor "Opensuse" for product "Leap" and version "42.1"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				42.2 Search vendor "Opensuse" for product "Leap" and version "42.2"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				<= 3.3.25 Search vendor "Gnu" for product "Gnutls" and version " <= 3.3.25"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.5.0 Search vendor "Gnu" for product "Gnutls" and version "3.5.0"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.5.1 Search vendor "Gnu" for product "Gnutls" and version "3.5.1"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.5.2 Search vendor "Gnu" for product "Gnutls" and version "3.5.2"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.5.3 Search vendor "Gnu" for product "Gnutls" and version "3.5.3"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.5.4 Search vendor "Gnu" for product "Gnutls" and version "3.5.4"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.5.5 Search vendor "Gnu" for product "Gnutls" and version "3.5.5"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.5.6 Search vendor "Gnu" for product "Gnutls" and version "3.5.6"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.5.7 Search vendor "Gnu" for product "Gnutls" and version "3.5.7"		-		Affected