DBD::mysql up to 4.033 my_login use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in DBD::mysql up to 4.033 and classified as critical. The affected element is the function my_login. This manipulation causes use after free. This vulnerability is tracked as CVE-2015-8949. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in DBD::mysql up to 4.033 (Database Software) and classified as very critical. Affected by this vulnerability is the function my_login. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Use-after-free vulnerability in the my_login function in DBD::mysql before 4.033_01 allows attackers to have unspecified impact by leveraging a call to mysql_errno after a failure of my_login.

The weakness was disclosed 08/19/2016 (Website). The advisory is shared at debian.org. This vulnerability is known as CVE-2015-8949 since 07/26/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/14/2022).

The vulnerability scanner Nessus provides a plugin with the ID 92733 (Fedora 24 : perl-DBD-MySQL (2016-4274c906e7)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175800 (Debian Security Update for libdbd-mysql-perl (DSA 3635-1)).

Upgrading to version 4.033_01 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 (92733) and SecurityFocus (BID 92118†). The entry VDB-90876 is pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / 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: 92733
Nessus Name: Fedora 24 : perl-DBD-MySQL (2016-4274c906e7)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703635
OpenVAS Name: Debian Security Advisory DSA 3635-1 (libdbd-mysql-perl - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: DBD::mysql 4.033_01
Patch: github.com

Timelineinfo

07/25/2016 🔍
07/26/2016 +1 days 🔍
08/04/2016 +9 days 🔍
08/05/2016 +1 days 🔍
08/19/2016 +14 days 🔍
08/19/2016 +0 days 🔍
08/20/2016 +1 days 🔍
09/14/2022 +2216 days 🔍

Sourcesinfo

Advisory: FEDORA-2016-4274c906e7
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8949 (🔍)
GCVE (CVE): GCVE-0-2015-8949
GCVE (VulDB): GCVE-100-90877

OVAL: 🔍

SecurityFocus: 92118 - DBD::mysql 'my_login()' Function Use After Free Remote Code Execution Vulnerability

See also: 🔍

Entryinfo

Created: 08/20/2016 17:51
Updated: 09/14/2022 08:37
Changes: 08/20/2016 17:51 (66), 03/30/2019 23:50 (13), 09/14/2022 08:31 (4), 09/14/2022 08:32 (1), 09/14/2022 08:37 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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