Xmlsoft libxml2 2.9.1 resource management

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.5	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Xmlsoft libxml2 2.9.1. The affected element is an unknown function. Such manipulation leads to resource management. This vulnerability is uniquely identified as CVE-2015-8035. No exploit exists.

Detailsinfo

A vulnerability was found in Xmlsoft libxml2 2.9.1 (Document Processing Software) and classified as problematic. Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

The xz_decomp function in xzlib.c in libxml2 2.9.1 does not properly detect compression errors, which allows context-dependent attackers to cause a denial of service (process hang) via crafted XML data.

The weakness was disclosed 11/02/2015 as confirmed mailinglist post (oss-sec). The advisory is shared for download at seclists.org. This vulnerability is handled as CVE-2015-8035 since 11/02/2015. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 87000 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124725 (Fedora Security Update for mingw-libxml2 (FEDORA-2016-a9ee80b01d)).

The vulnerability is also documented in the databases at X-Force (107845), Tenable (87000) and SecurityFocus (BID 77390†). The entries VDB-79257, VDB-79258, VDB-79793 and VDB-79794 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Document Processing Software

Vendor

Xmlsoft

Name

libxml2

Version

2.9.1

License

open-source

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 87000
Nessus File: 🔍
Nessus Risk: 🔍

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: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/02/2015 🔍
11/02/2015 +0 days 🔍
11/06/2015 +4 days 🔍
11/18/2015 +12 days 🔍
06/26/2022 +2412 days 🔍

Sourcesinfo

Advisory: USN-2812-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8035 (🔍)
GCVE (CVE): GCVE-0-2015-8035
GCVE (VulDB): GCVE-100-79052

OVAL: 🔍

X-Force: 107845 - libxml2 denial of service
SecurityFocus: 77390
SecurityTracker: 1034243

See also: 🔍

Entryinfo

Created: 11/06/2015 09:34
Updated: 06/26/2022 10:18
Changes: 11/06/2015 09:34 (53), 03/05/2018 08:24 (9), 06/26/2022 10:06 (4), 06/26/2022 10:13 (1), 06/26/2022 10:18 (1)
Complete: 🔍
Cache ID: 216::103