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4.6	$0-$5k	0.00

A vulnerability has been found in GnuPG and classified as problematic. This vulnerability affects the function read_block of the file pubring.gpg of the component Key Processing. The manipulation as part of a Malformed Key leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

The read_block function in g10/import.c in GnuPG 1.4.x before 1.4.13 and 2.0.x through 2.0.19, when importing a key, allows remote attackers to corrupt the public keyring database or cause a denial of service (application crash) via a crafted length field of an OpenPGP packet.

The weakness was published 12/28/2012 by KB Sriram as GnuPG 1.4.12 and lower - memory access errors and keyring database corruption as confirmed mailinglist post (Bugtraq). The advisory is shared for download at seclists.org. The public release happened without coordination with the vendor. This vulnerability was named CVE-2012-6085 since 12/06/2012. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 70601 (RHEL 5 : gnupg (RHSA-2013:1458)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 390142 (Oracle VM Server for x86 Security Update for gnupg2 (OVMSA-2018-0239)).

Upgrading to version 1.4.13 eliminates this vulnerability. The upgrade is hosted for download at gnupg.org. The problem might be mitigated by replacing the product with PGP as an alternative. The best possible mitigation is suggested to be upgrading to the latest version. 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 X-Force (80990) and Tenable (70601). Additional details are provided at seclists.org. Similar entries are available at 7239 and 10308.

Productinfo

Name

• GnuPG

Version

• 1.4.0
• 1.4.2
• 1.4.3
• 1.4.4
• 1.4.5
• 1.4.8
• 1.4.10
• 1.4.11
• 1.4.12
• 2.0
• 2.0.1
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.6
• 2.0.7
• 2.0.8
• 2.0.10
• 2.0.11
• 2.0.12
• 2.0.13
• 2.0.14
• 2.0.15
• 2.0.16
• 2.0.17
• 2.0.18
• 2.0.19

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
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: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
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: 70601
Nessus Name: RHEL 5 : gnupg (RHSA-2013:1458)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892601
OpenVAS Name: Debian Security Advisory DSA 2601-1 (gnupg, gnupg2 - missing input sanitation
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GnuPG 1.4.13
Alternative: PGP

Timelineinfo

12/06/2012 🔍
12/20/2012 +14 days 🔍
12/28/2012 +8 days 🔍
01/02/2013 +5 days 🔍
01/02/2013 +0 days 🔍
01/05/2013 +3 days 🔍
01/23/2013 +18 days 🔍
01/24/2013 +1 days 🔍
10/25/2013 +274 days 🔍
04/20/2021 +2734 days 🔍

Sourcesinfo

Advisory: GnuPG 1.4.12 and lower - memory access errors and keyring database corruption
Researcher: KB Sriram
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-6085 (🔍)
OVAL: 🔍

X-Force: 80990 - GnuPG public keys code execution, High Risk
Vulnerability Center: 38160 - GnuPG 1.4.x and 2.0.x Remote Code Execution Vulnerability via a Crafted OpenPGP Packet, Medium
SecurityFocus: 57102 - GnuPG CVE-2012-6085 Multiple Remote Memory Corruption Vulnerabilities
OSVDB: 88866

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 01/05/2013 14:11
Updated: 04/20/2021 14:45
Changes: 01/05/2013 14:11 (55), 08/09/2019 15:35 (35), 04/20/2021 14:45 (3)
Complete: 🔍

Discussion

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