libxml2 2.9.2 State xmlNextChar XML Data memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

A vulnerability was found in libxml2 2.9.2 (Document Processing Software). It has been rated as critical. This issue affects the function xmlNextChar of the component State Handler. The manipulation as part of a XML Data leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The xmlNextChar function in libxml2 2.9.2 does not properly check the state, which allows context-dependent attackers to cause a denial of service (heap-based buffer over-read and application crash) or obtain sensitive information via crafted XML data.

The weakness was presented 12/15/2015 (Website). The advisory is shared at git.gnome.org. The identification of this vulnerability is CVE-2015-8241 since 11/18/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

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 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 vulnerability database at Tenable (87000).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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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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VulDB Base Score: 🔍
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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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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: 🔍
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Nessus Context: 🔍

OpenVAS ID: 703430
OpenVAS Name: Debian Security Advisory DSA 3430-1 (libxml2 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: git.gnome.org

Timelineinfo

11/18/2015 🔍
11/20/2015 +2 days 🔍
11/23/2015 +3 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-2015-8241 (🔍)
OVAL: 🔍

SecurityTracker: 1034243
Vulnerability Center: 54855 - Libxml2 Remote Information Disclosure or DoS due to Buffer Overread in xmlNextChar, Medium
SecurityFocus: 77621

Entryinfo

Created: 12/16/2015 09:47
Updated: 07/01/2022 08:10
Changes: 12/16/2015 09:47 (62), 05/11/2018 13:11 (12), 07/01/2022 08:04 (5), 07/01/2022 08:10 (1)
Complete: 🔍
Cache ID: 3:64D:103

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