MIT Kerberos 5-1.14 lib/gssapi/krb5/iakerb.c gss_export_sec_context memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in MIT Kerberos 5-1.14 and classified as problematic. Affected by this issue is the function gss_export_sec_context in the library lib/gssapi/krb5/iakerb.c. This manipulation causes memory corruption. This vulnerability is handled as CVE-2015-2698. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in MIT Kerberos 5-1.14 (Network Authentication Software). Affected by this vulnerability is the function gss_export_sec_context in the library lib/gssapi/krb5/iakerb.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The iakerb_gss_export_sec_context function in lib/gssapi/krb5/iakerb.c in MIT Kerberos 5 (aka krb5) 1.14 pre-release 2015-09-14 improperly accesses a certain pointer, which allows remote authenticated users to cause a denial of service (memory corruption) or possibly have unspecified other impact by interacting with an application that calls the gss_export_sec_context function. NOTE: this vulnerability exists because of an incorrect fix for CVE-2015-2696.

The weakness was released 11/13/2015 (Website). The advisory is shared at github.com. This vulnerability is known as CVE-2015-2698 since 03/24/2015. The attack can be launched remotely. A single authentication is necessary for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 87003 (openSUSE Security Update : krb5 (openSUSE-2015-784)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196311 (Ubuntu Security Notification for Krb5 Vulnerabilities (USN-2810-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (87003) and Vulnerability Center (SBV-54491†). Entry connected to this vulnerability is available at VDB-64211. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87003
Nessus Name: openSUSE Security Update : krb5 (openSUSE-2015-784)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for krb5 FEDORA-2015-200
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

03/24/2015 🔍
11/11/2015 +232 days 🔍
11/12/2015 +1 days 🔍
11/12/2015 +0 days 🔍
11/13/2015 +1 days 🔍
11/13/2015 +0 days 🔍
11/19/2015 +6 days 🔍
11/23/2015 +4 days 🔍
06/27/2022 +2408 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: USN-2810-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-2698 (🔍)
GCVE (CVE): GCVE-0-2015-2698
GCVE (VulDB): GCVE-100-79201
Vulnerability Center: 54491 - MIT Kerberos 5 Remote DoS or Other Impact in iakerb_gss_export_sec_context Function, High

See also: 🔍

Entryinfo

Created: 11/13/2015 13:59
Updated: 06/27/2022 12:27
Changes: 11/13/2015 13:59 (58), 04/18/2018 13:59 (14), 06/27/2022 12:27 (4)
Complete: 🔍
Cache ID: 216:678:103

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