libxml2 up to 2.9.2 XML Data SAX2.c xmlSAX2TextNode memory corruption

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 libxml2 up to 2.9.2. Affected by this vulnerability is the function xmlSAX2TextNode of the file SAX2.c of the component XML Data Handler. The manipulation results in memory corruption. This vulnerability is cataloged as CVE-2015-8242. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in libxml2 up to 2.9.2 (Document Processing Software). Affected is the function xmlSAX2TextNode of the file SAX2.c of the component XML Data Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The xmlSAX2TextNode function in SAX2.c in the push interface in the HTML parser in libxml2 before 2.9.3 allows context-dependent attackers to cause a denial of service (stack-based buffer over-read and application crash) or obtain sensitive information via crafted XML data.

The weakness was shared 12/15/2015 (Website). The advisory is available at git.gnome.org. This vulnerability is traded as CVE-2015-8242 since 11/18/2015. 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 87000 (FreeBSD : libxml2 -- multiple vulnerabilities (e5423caf-8fb8-11e5-918c-bcaec565249c)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351588 (Amazon Linux Security Advisory for libxml2: ALAS2-2019-1220).

Upgrading to version 2.9.3 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (87000), SecurityFocus (BID 77681†) and Vulnerability Center (SBV-54857†). The entries VDB-77250, VDB-79052, VDB-79257 and VDB-79258 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 87000
Nessus Name: FreeBSD : libxml2 -- multiple vulnerabilities (e5423caf-8fb8-11e5-918c-bcaec565249c)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2015-628
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libxml2 2.9.3
Patch: git.gnome.org

Timelineinfo

11/18/2015 🔍
11/20/2015 +2 days 🔍
11/22/2015 +2 days 🔍
11/23/2015 +1 days 🔍
11/25/2015 +2 days 🔍
12/08/2015 +13 days 🔍
12/15/2015 +7 days 🔍
12/15/2015 +0 days 🔍
12/16/2015 +1 days 🔍
07/01/2022 +2389 days 🔍

Sourcesinfo

Advisory: USN-2834-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8242 (🔍)
GCVE (CVE): GCVE-0-2015-8242
GCVE (VulDB): GCVE-100-79794
SecurityFocus: 77681 - libxml2 Out of Bounds Read Multiple Information Disclosure Vulnerabilities
SecurityTracker: 1034243
Vulnerability Center: 54857 - Libxml2 Remote Information Disclosure due to Buffer Overread in XmlSAX2TextNode, Medium

See also: 🔍

Entryinfo

Created: 12/16/2015 09:47
Updated: 07/01/2022 08:11
Changes: 12/16/2015 09:47 (62), 05/11/2018 13:12 (15), 07/01/2022 08:11 (6)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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