CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.8	$0-$5k	0.00

A vulnerability classified as problematic has been found in libpng up to 1.2.37 (Image Processing Software). Affected is the function png_format_buffer of the file pngerror.c. The manipulation with an unknown input leads to a off-by-one vulnerability. CWE is classifying the issue as CWE-193. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. This is going to have an impact on availability. CVE summarizes:

The png_format_buffer function in pngerror.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 allows remote attackers to cause a denial of service (application crash) via a crafted PNG image that triggers an out-of-bounds read during the copying of error-message data. NOTE: this vulnerability exists because of a CVE-2004-0421 regression. NOTE: this is called an off-by-one error by some sources.

The weakness was disclosed 07/17/2011 as Bug 717084 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is traded as CVE-2011-2501 since 06/15/2011. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 68318 (Oracle Linux 6 : libpng (ELSA-2011-1105)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155726 (Oracle Enterprise Linux Update for libpng (ELSA-2011-1105)).

Upgrading to version 1.2.38 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (68517) and Tenable (68318). The entries 58408, 57945, 57944 and 57943 are pretty similar.

Productinfo

Type

• Image Processing Software

Name

• libpng

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9
• 1.2.10
• 1.2.11
• 1.2.12
• 1.2.13
• 1.2.14
• 1.2.15
• 1.2.16
• 1.2.17
• 1.2.18
• 1.2.19
• 1.2.20
• 1.2.21
• 1.2.22
• 1.2.23
• 1.2.24
• 1.2.25
• 1.2.26
• 1.2.27
• 1.2.28
• 1.2.29
• 1.2.30
• 1.2.31
• 1.2.32
• 1.2.33
• 1.2.34
• 1.2.35
• 1.2.36
• 1.2.37

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Off-by-one
CWE: CWE-193 / CWE-189
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 68318
Nessus Name: Oracle Linux 6 : libpng (ELSA-2011-1105)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70060
OpenVAS Name: Debian Security Advisory DSA 2287-1 (libpng)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libpng 1.2.38
Patch: 65e6d5a34f49acdb362a0625a706c6b914e670af

Timelineinfo

06/07/2011 🔍
06/07/2011 +0 days 🔍
06/15/2011 +8 days 🔍
06/28/2011 +13 days 🔍
07/17/2011 +19 days 🔍
07/17/2011 +0 days 🔍
07/31/2011 +14 days 🔍
07/12/2013 +712 days 🔍
03/23/2015 +619 days 🔍
11/14/2021 +2428 days 🔍

Sourcesinfo

Advisory: Bug 717084
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-2501 (🔍)
OVAL: 🔍

X-Force: 68517
Vulnerability Center: 32466 - libpng Remote Denial of Service Vulnerability via a Crafted PNG Image, Medium
SecurityFocus: 48474 - libpng 'pngerror.c' Off-By-One Error Denial Of Service Vulnerability
Secunia: 45046 - libpng Multiple Vulnerabilities, Moderately Critical

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/14/2021 14:26
Changes: 03/23/2015 16:50 (68), 03/28/2017 23:15 (13), 11/14/2021 14:18 (4), 11/14/2021 14:22 (11), 11/14/2021 14:26 (1)
Complete: 🔍

Discussion

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