CVE-2012-3461

Severity Score

4.3

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The (1) otrl_base64_otr_decode function in src/b64.c; (2) otrl_proto_data_read_flags and (3) otrl_proto_accept_data functions in src/proto.c; and (4) decode function in toolkit/parse.c in libotr before 3.2.1 allocates a zero-length buffer when decoding a base64 string, which allows remote attackers to cause a denial of service (application crash) via a message with the value "?OTR:===.", which triggers a heap-based buffer overflow.

La función (1) otrl_base64_otr_decode en src/b64.c; la función (2) otrl_proto_data_read_flags y la función (3) otrl_proto_accept_data en src/proto.c; y la función (4) (decode) in toolkit/parse.c in libotr before v3.2.1 asigna un búfer de longitud cero cuando se decodifica un (string) en base64, lo que permite a atacantes remotos causar una denegación de servicio (caída de la aplicación) a través de un mensaje con el valor "?OTR:===.", lo cual dispara un desbordamiento de búfer basado en memoria dinámica.

*Credits: N/A

CVSS Scores

NISTv2 4.3

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

2012-06-14 CVE Reserved
2012-08-13 CVE Published
2024-03-20 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (16)

URL	Tag	Source
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684121	X_refsource_misc
http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001347.html	Mailing List
http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001348.html	Mailing List
http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=1902baee5d4b056850274ed0fa8c2409f1187435	X_refsource_confirm
http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=6d4ca89cf1d3c9a8aff696c3a846ac5a51f762c1	X_refsource_confirm
http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=b17232f86f8e60d0d22caf9a2400494d3c77da58	X_refsource_confirm
http://www.securityfocus.com/bid/54907	Vdb Entry
https://bugzilla.redhat.com/show_bug.cgi?id=846377	X_refsource_misc
https://exchange.xforce.ibmcloud.com/vulnerabilities/77528	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00016.html	2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00019.html	2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00019.html	2023-02-13
http://www.debian.org/security/2012/dsa-2526	2023-02-13
http://www.mandriva.com/security/advisories?name=MDVSA-2012:131	2023-02-13
http://www.mandriva.com/security/advisories?name=MDVSA-2013:097	2023-02-13
http://www.ubuntu.com/usn/USN-1541-1	2023-02-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cypherpunks Search vendor "Cypherpunks"		Libotr Search vendor "Cypherpunks" for product "Libotr"				<= 3.2.0 Search vendor "Cypherpunks" for product "Libotr" and version " <= 3.2.0"		-		Affected
Cypherpunks Search vendor "Cypherpunks"		Libotr Search vendor "Cypherpunks" for product "Libotr"				3.1.0 Search vendor "Cypherpunks" for product "Libotr" and version "3.1.0"		-		Affected