VDB-10597 · OSVDB 98111 · GCVE-100-10597

libxml2 valid.c xmlValidateElementContent null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in libxml2. This issue affects the function xmlValidateElementContent of the file valid.c. This manipulation causes null pointer dereference. No exploit exists. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability has been found in libxml2 (Document Processing Software) (version now known) and classified as critical. Affected by this vulnerability is the function xmlValidateElementContent of the file valid.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability.

The weakness was disclosed 09/30/2013 by Gaurav Gupta with Samsung as Bug 708364 - Pointer dereferenced before null check (valid.c) as confirmed advisory (Website). The advisory is shared at bugzilla.gnome.org. The public release has been coordinated in cooperation with the project team. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

Applying the patch Fix pointer dereferenced before null check is able to eliminate this problem. The bugfix is ready for download at git.gnome.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at OSVDB (98111†). The entries VDB-10596, VDB-10595, VDB-10594 and VDB-10593 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: Fix pointer dereferenced before null check

Timelineinfo

09/30/2013 🔍
09/30/2013 +0 days 🔍
10/08/2013 +8 days 🔍
03/24/2019 +1993 days 🔍

Sourcesinfo

Advisory: Bug 708364 - Pointer dereferenced before null check (valid.c)
Researcher: Gaurav Gupta
Organization: Samsung
Status: Confirmed
Coordinated: 🔍

GCVE (VulDB): GCVE-100-10597
OSVDB: 98111

See also: 🔍

Entryinfo

Created: 10/08/2013 12:55
Updated: 03/24/2019 17:41
Changes: 10/08/2013 12:55 (46), 03/24/2019 17:41 (2)
Complete: 🔍
Committer:
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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