Fetchmail up to 6.2.5.1 POP3 Server memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

A vulnerability was found in Fetchmail up to 6.2.5.1. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component POP3 Server. 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 availability. The summary by CVE is:

Buffer overflow in the POP3 client in Fetchmail before 6.2.5.2 allows remote POP3 servers to cause a denial of service and possibly execute arbitrary code via long UIDL responses. NOTE: a typo in an advisory accidentally used the wrong CVE identifier for the Fetchmail issue. This is the correct identifier.

The bug was discovered 07/22/2005. The weakness was presented 07/20/2005 (Website). The advisory is shared at us-cert.gov. This vulnerability is known as CVE-2005-2335 since 07/21/2005. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

After 2 months, there has been an exploit disclosed. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 21847 (CentOS 3 / 4 : fetchmail (CESA-2005:640)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115383 (Apple Mac OS X Security Update 2006-004 Not Installed (APPLE-SA-2006-08-01)).

Upgrading to version 6.2.5.2 eliminates this vulnerability. A possible mitigation has been published 5 days after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 4638.

The vulnerability is also documented in the databases at X-Force (22596) and Tenable (21847). See 1998, 25512, 26669 and 31631 for similar entries.

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
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Nessus ID: 21847
Nessus Name: CentOS 3 / 4 : fetchmail (CESA-2005:640)
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OpenVAS ID: 55047
OpenVAS Name: Debian Security Advisory DSA 774-1 (fetchmail)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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Upgrade: Fetchmail 6.2.5.2
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Timelineinfo

07/20/2005 🔍
07/21/2005 +0 days 🔍
07/21/2005 +0 days 🔍
07/21/2005 +0 days 🔍
07/22/2005 +1 days 🔍
07/22/2005 +0 days 🔍
07/22/2005 +0 days 🔍
07/25/2005 +2 days 🔍
07/27/2005 +2 days 🔍
07/27/2005 +0 days 🔍
08/30/2005 +34 days 🔍
07/03/2006 +307 days 🔍
03/11/2015 +3173 days 🔍
06/07/2019 +1549 days 🔍

Sourcesinfo

Advisory: us-cert.gov
Status: Not defined
Confirmation: 🔍

CVE: CVE-2005-2335 (🔍)
OVAL: 🔍

X-Force: 22596
Vulnerability Center: 8754 - Buffer Overflow in Fetchmail < 6.2.5.2 POP3 Client via Long UIDL Responses, Medium
SecurityFocus: 14349 - Fetchmail POP3 Client Buffer Overflow Vulnerability
Secunia: 16176 - Fetchmail UIDL Buffer Overflow Vulnerability, Moderately Critical
OSVDB: 18174 - Fetchmail UIDL POP3 Server Response Overflow
Vupen: ADV-2005-1171

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

Created: 03/11/2015 23:39
Updated: 06/07/2019 20:45
Changes: 03/11/2015 23:39 (92), 06/07/2019 20:45 (3)
Complete: 🔍

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