X.org xdm 1.1.10 Authentication crypt cryptographic issues

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

A vulnerability was found in X.org xdm 1.1.10. It has been rated as critical. Affected by this issue is the function crypt of the component Authentication. The manipulation with an unknown input leads to a cryptographic issues vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is availability. CVE summarizes:

X.Org xdm 1.1.10, 1.1.11, and possibly other versions, when performing authentication using certain implementations of the crypt API function that can return NULL, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by attempting to log into an account whose password field contains invalid characters, as demonstrated using the crypt function from glibc 2.17 and later with (1) the "!" character in the salt portion of a password field or (2) a password that has been encrypted using DES or MD5 in FIPS-140 mode.

The weakness was disclosed 06/07/2013 by Alan Coopersmith as not defined mailinglist post (oss-sec). The advisory is shared for download at seclists.org. The public release has been coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2013-2179 since 02/19/2013. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1600.

After 4 days, there has been an exploit disclosed. The exploit is available at seclists.org. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 75068 (openSUSE Security Update : xdm (openSUSE-SU-2013:1117-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at cgit.freedesktop.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (85130) and Tenable (75068).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Cryptographic issues
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 75068
Nessus Name: openSUSE Security Update : xdm (openSUSE-SU-2013:1117-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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0-Day Time: 🔍
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Patch: cgit.freedesktop.org

Timelineinfo

02/19/2013 🔍
06/07/2013 +108 days 🔍
06/07/2013 +0 days 🔍
06/11/2013 +4 days 🔍
06/11/2013 +0 days 🔍
06/14/2013 +3 days 🔍
11/12/2013 +151 days 🔍
12/26/2013 +44 days 🔍
06/13/2014 +169 days 🔍
05/14/2021 +2527 days 🔍

Sourcesinfo

Vendor: x.org

Advisory: seclists.org
Researcher: Alan Coopersmith
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-2179 (🔍)
OVAL: 🔍

X-Force: 85130
Vulnerability Center: 42260 - X.Org x11 Local DoS Vulnerability due to Null Pointer Dereference in XDM Using crypt(), Low
OSVDB: 94236

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/14/2013 13:50
Updated: 05/14/2021 22:20
Changes: 06/14/2013 13:50 (54), 05/15/2017 11:20 (22), 05/14/2021 22:20 (3)
Complete: 🔍
Committer:

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