GNU libmicrohttpd up to 0.9.31 MHD_http_unescape memory corruption

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6.2$0-$5k0.00

A vulnerability classified as critical was found in GNU libmicrohttpd (Web Server). Affected by this vulnerability is the function MHD_http_unescape. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, and availability. The summary by CVE is:

The MHD_http_unescape function in libmicrohttpd before 0.9.32 might allow remote attackers to obtain sensitive information or cause a denial of service (crash) via unspecified vectors that trigger an out-of-bounds read.

The weakness was published 12/13/2013 by Florian Weimer (Website). It is possible to read the advisory at gnunet.org. This vulnerability is known as CVE-2013-7038 since 12/09/2013. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 72254 (GLSA-201402-01 : GNU libmicrohttpd: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350376 (Amazon Linux Security Advisory for libmicrohttpd: ALAS-2014-353).

Upgrading to version 0.9.31 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (89568) and Tenable (72254). Similar entry is available at 65756.

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 72254
Nessus Name: GLSA-201402-01 : GNU libmicrohttpd: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
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Qualys ID: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libmicrohttpd 0.9.31

Timelineinfo

12/03/2013 🔍
12/03/2013 +0 days 🔍
12/06/2013 +3 days 🔍
12/09/2013 +3 days 🔍
12/13/2013 +4 days 🔍
12/13/2013 +0 days 🔍
01/30/2014 +48 days 🔍
02/03/2014 +4 days 🔍
03/24/2015 +414 days 🔍
01/11/2022 +2485 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: gnunet.org
Researcher: Florian Weimer
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-7038 (🔍)
X-Force: 89568
Vulnerability Center: 43112 - libmicrohttpd before 0.9.32 Remote Information Disclosure or DoS Vulnerability due to Out-Of-Bounds Read, Medium
SecurityFocus: 64138 - Libmicrohttpd Multiple Remote Security Vulnerabilities
Secunia: 55903 - libmicrohttpd Two Vulnerabilities, Moderately Critical

See also: 🔍

Entryinfo

Created: 03/24/2015 15:54
Updated: 01/11/2022 20:47
Changes: 03/24/2015 15:54 (68), 05/20/2017 10:13 (7), 01/11/2022 20:47 (3)
Complete: 🔍

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