libevent up to 1.4.14/2.0.21/2.1.4 bufferevent_write numeric error

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in libevent up to 1.4.14/2.0.21/2.1.4. This issue affects the function bufferevent_write. The manipulation results in numeric error. This vulnerability is known as CVE-2014-6272. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in libevent up to 1.4.14/2.0.21/2.1.4. Affected is the function bufferevent_write. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.

The weakness was published 08/24/2015 (Website). The advisory is shared for download at debian.org. This vulnerability is traded as CVE-2014-6272 since 09/09/2014. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 82120 (Debian DLA-137-1 : libevent security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 167264 (SUSE Enterprise Linux Security update for libevent (SUSE-SU-2014:1283-1)).

Upgrading to version 1.4.15, 2.0.22 or 2.1.5-beta eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (82120). Similar entry is available at VDB-77430. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 82120
Nessus Name: Debian DLA-137-1 : libevent security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703119
OpenVAS Name: Debian Security Advisory DSA 3119-1 (libevent - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libevent 1.4.15/2.0.22/2.1.5-beta

Timelineinfo

09/09/2014 🔍
08/24/2015 +349 days 🔍
08/24/2015 +0 days 🔍
08/25/2015 +1 days 🔍
12/15/2024 +3400 days 🔍

Sourcesinfo

Advisory: debian.org
Status: Confirmed

CVE: CVE-2014-6272 (🔍)
GCVE (CVE): GCVE-0-2014-6272
GCVE (VulDB): GCVE-100-77400

OVAL: 🔍

SecurityFocus: 71971

See also: 🔍

Entryinfo

Created: 08/25/2015 10:02
Updated: 12/15/2024 02:26
Changes: 08/25/2015 10:02 (50), 10/31/2017 08:18 (7), 06/13/2022 09:01 (4), 12/15/2024 02:26 (24)
Complete: 🔍
Cache ID: 216:A27:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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