Simon Tatham PuTTY up to 0.54 SSH Connection Attempt heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Simon Tatham PuTTY up to 0.54. It has been rated as critical. The impacted element is an unknown function of the component SSH Connection Attempt Handler. Performing a manipulation results in heap-based overflow. This vulnerability is reported as CVE-2004-1440. The attack is possible to be carried out remotely. Moreover, an exploit is present. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Simon Tatham PuTTY up to 0.54 (Connectivity Software). This affects an unknown function of the component SSH Connection Attempt Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Multiple heap-based buffer overflows in the modpow function in PuTTY before 0.55 allow (1) remote attackers to execute arbitrary code via an SSH2 packet with a base argument that is larger than the mod argument, which causes the modpow function to write memory before the beginning of its buffer, and (2) remote malicious servers to cause a denial of service (client crash) and possibly execute arbitrary code via a large bignum during authentication.

The bug was discovered 08/04/2004. The weakness was disclosed 08/04/2004 by CORE Security with Core Security Technologies (Website). The advisory is shared at chiark.greenend.org.uk. This vulnerability is uniquely identified as CVE-2004-1440 since 02/13/2005. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but an exploit is available.

After 6 hours, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 14560 (GLSA-200408-04 : PuTTY: Pre-authentication arbitrary code execution), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at chiark.greenend.org.uk. 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.

The vulnerability is also documented in the databases at X-Force (16885), Tenable (14560), SecurityFocus (BID 10850†), OSVDB (8299†) and Secunia (SA12212†). Further details are available at chiark.greenend.org.uk. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 14560
Nessus Name: GLSA-200408-04 : PuTTY: Pre-authentication arbitrary code execution
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 54634
OpenVAS Name: Gentoo Security Advisory GLSA 200408-04 (PuTTY)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Patch: chiark.greenend.org.uk

Timelineinfo

08/04/2004 🔍
08/04/2004 +0 days 🔍
08/04/2004 +0 days 🔍
08/04/2004 +0 days 🔍
08/04/2004 +0 days 🔍
08/04/2004 +0 days 🔍
08/04/2004 +0 days 🔍
08/05/2004 +0 days 🔍
08/18/2004 +13 days 🔍
08/30/2004 +12 days 🔍
12/31/2004 +123 days 🔍
12/31/2004 +0 days 🔍
02/13/2005 +44 days 🔍
06/29/2019 +5249 days 🔍

Sourcesinfo

Advisory: chiark.greenend.org.uk
Researcher: CORE Security
Organization: Core Security Technologies
Status: Not defined
Confirmation: 🔍

CVE: CVE-2004-1440 (🔍)
GCVE (CVE): GCVE-0-2004-1440
GCVE (VulDB): GCVE-100-777
X-Force: 16885 - PuTTY allows attacker to execute arbitrary code, High Risk
SecurityFocus: 10850 - PuTTY Modpow Integer Handling Memory Corruption Vulnerability
Secunia: 12212 - PuTTY Authentication Process Buffer Overflow Vulnerabilities, Moderately Critical
OSVDB: 8299 - PuTTY modpow() Pre-authentication Arbitrary Code Execution
Vulnerability Center: 5118 - PuTTY Client Wrong Modpow Integer Handling Enables Code Execution, Medium

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

Entryinfo

Created: 08/04/2004 13:31
Updated: 06/29/2019 06:38
Changes: 08/04/2004 13:31 (98), 06/29/2019 06:38 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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