MIT Kerberos 5-1.14 rb5_unparse_name memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in MIT Kerberos 5-1.14. Affected by this vulnerability is the function rb5_unparse_name. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2015-8631. The attack is possible to be carried out remotely. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in MIT Kerberos 5-1.14 (Network Authentication Software). It has been classified as problematic. This affects the function rb5_unparse_name. 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 availability.

The weakness was disclosed 02/03/2016 as confirmed git commit (GIT Repository). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2015-8631 since 12/23/2015. The exploitability is told to be easy. It is possible to initiate the attack remotely. A authentication is required for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 88886 (Debian DLA-423-1 : krb5 security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350010 (Amazon Linux Security Advisory for krb5: ALAS-2016-691).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110393), Tenable (88886), SecurityFocus (BID 82804†) and Vulnerability Center (SBV-57261†). The entries VDB-80818 and VDB-80819 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

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: 88886
Nessus Name: Debian DLA-423-1 : krb5 security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703466
OpenVAS Name: Debian Security Advisory DSA 3466-1 (krb5 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: github.com

Timelineinfo

12/23/2015 🔍
01/08/2016 +16 days 🔍
02/03/2016 +26 days 🔍
02/03/2016 +0 days 🔍
02/08/2016 +5 days 🔍
02/12/2016 +4 days 🔍
02/22/2016 +10 days 🔍
02/23/2016 +1 days 🔍
03/14/2016 +20 days 🔍
07/07/2022 +2306 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: 83ed75feba32e46f736fcce0d96a0445f29b96c2
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8631 (🔍)
GCVE (CVE): GCVE-0-2015-8631
GCVE (VulDB): GCVE-100-80817
X-Force: 110393 - MIT Kerberos rb5_unparse_name() function denial of service
SecurityFocus: 82804 - MIT kerberos 5 CVE-2015-8631 Memory Corruption Vulnerability
SecurityTracker: 1034916
Vulnerability Center: 57261 - Kerberos 5 Remote DoS via a Request Specifying a NULL Principal Name, Medium

See also: 🔍

Entryinfo

Created: 02/08/2016 09:28
Updated: 07/07/2022 08:39
Changes: 02/08/2016 09:28 (77), 01/31/2019 13:36 (12), 07/07/2022 08:38 (6), 07/07/2022 08:39 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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