GnuPG 1.4.4 parse_packet.c parse_comment denial of service

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

Summaryinfo

A vulnerability classified as problematic has been found in GnuPG 1.4.4. Affected by this issue is the function parse_comment of the file parse_packet.c. Performing a manipulation results in denial of service. This vulnerability is identified as CVE-2006-3746. The attack can be initiated remotely. Additionally, an exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in GnuPG 1.4.4. This affects the function parse_comment of the file parse_packet.c. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

Integer overflow in parse_comment in GnuPG (gpg) 1.4.4 allows remote attackers to cause a denial of service (segmentation fault) via a crafted message.

The bug was discovered 08/01/2006. The weakness was released 08/02/2006 by Evgeny Legerov (Website). The advisory is shared at lists.immunitysec.com. This vulnerability is uniquely identified as CVE-2006-3746 since 07/20/2006. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 22683 (Debian DSA-1141-1 : gnupg2 - integer overflow), 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 156228 (Oracle Enterprise Linux Update for GnuPG (ELSA-2006:0615)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at gnupg.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 1 days after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 9036.

The vulnerability is also documented in the databases at X-Force (28220), Exploit-DB (28257), Tenable (22683), SecurityFocus (BID 19110†) and OSVDB (27664†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22683
Nessus Name: Debian DSA-1141-1 : gnupg2 - integer overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 57209
OpenVAS Name: Debian Security Advisory DSA 1140-1 (gnupg)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Patch: gnupg.org
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

07/20/2006 🔍
07/22/2006 +2 days 🔍
07/22/2006 +0 days 🔍
07/28/2006 +6 days 🔍
08/01/2006 +4 days 🔍
08/02/2006 +1 days 🔍
08/02/2006 +0 days 🔍
08/02/2006 +0 days 🔍
08/03/2006 +0 days 🔍
08/04/2006 +1 days 🔍
08/07/2006 +3 days 🔍
08/16/2006 +9 days 🔍
10/14/2006 +59 days 🔍
06/18/2025 +6822 days 🔍

Sourcesinfo

Advisory: lists.immunitysec.com
Researcher: Evgeny Legerov
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-3746 (🔍)
GCVE (CVE): GCVE-0-2006-3746
GCVE (VulDB): GCVE-100-2421

OVAL: 🔍

X-Force: 28220 - GnuPG parse_comment() integer overflow, High Risk
SecurityFocus: 19110 - GnuPG Parse_Comment Remote Buffer Overflow Vulnerability
Secunia: 21524 - Mandriva update for gnupg, Moderately Critical
OSVDB: 27664 - GnuPG parse_comment Function Crafted Message Overflow DoS
SecurityTracker: 1016622
Vulnerability Center: 12457 - GnuPG Denial of Service via a Crafted Message, Medium
Vupen: ADV-2006-3123

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

Entryinfo

Created: 08/04/2006 11:44
Updated: 06/18/2025 20:17
Changes: 08/04/2006 11:44 (105), 08/09/2019 15:34 (1), 01/19/2025 18:17 (19), 06/18/2025 20:17 (2)
Complete: 🔍
Cache ID: 216:6D6:103

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

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