Xmlsoft libxml2 XML File htmlParseNameComplex memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Xmlsoft libxml2. Affected by this issue is the function htmlParseNameComplex of the component XML File Handler. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2016-2073. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Xmlsoft libxml2 (Document Processing Software) (the affected version is unknown). It has been classified as critical. This affects the function htmlParseNameComplex of the component XML File 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. The summary by CVE is:

The htmlParseNameComplex function in HTMLparser.c in libxml2 allows attackers to cause a denial of service (out-of-bounds read) via a crafted XML document.

The weakness was presented 01/27/2016 with Qihoo 360 as Bug 1301928 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2016-2073 since 01/26/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 93154 (SUSE SLES11 Security Update : libxml2 (SUSE-SU-2016:1604-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175754 (Debian Security Update for libxml2 (DSA 3593-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 6 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110307), Tenable (93154), SecurityFocus (BID 85267†) and Vulnerability Center (SBV-57430†). Further details are available at openwall.com. See VDB-81414, VDB-81506, VDB-82319 and VDB-87473 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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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: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93154
Nessus Name: SUSE SLES11 Security Update : libxml2 (SUSE-SU-2016:1604-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for libxml2 openSUSE-SU-2016:1595-1 (libxml2)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

01/26/2016 🔍
01/27/2016 +1 days 🔍
02/02/2016 +6 days 🔍
02/12/2016 +10 days 🔍
02/12/2016 +0 days 🔍
03/04/2016 +21 days 🔍
03/21/2016 +17 days 🔍
06/17/2016 +88 days 🔍
08/29/2016 +73 days 🔍
07/06/2022 +2137 days 🔍

Sourcesinfo

Advisory: Bug 1301928
Organization: Qihoo 360
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-2073 (🔍)
GCVE (CVE): GCVE-0-2016-2073
GCVE (VulDB): GCVE-100-80763

OVAL: 🔍

X-Force: 110307 - libxml2 htmlParseNameComplex() buffer overflow
SecurityFocus: 85267 - libxml2 'HTMLparser.c' Out of Bounds Read Denial of Service Vulnerability
SecurityTracker: 1035011
Vulnerability Center: 57430 - Libxml2 2.9.1 Remote DoS in htmlParseNameComplex via Crafted XML Data, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 02/02/2016 09:55
Updated: 07/06/2022 17:37
Changes: 02/02/2016 09:55 (79), 02/01/2019 14:47 (14), 07/06/2022 17:37 (3)
Complete: 🔍
Cache ID: 216:BA7:103

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