GNU GNU screen 4.0.3 race condition

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.8$0-$5k0.00

A vulnerability has been found in GNU GNU screen 4.0.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component screen. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect integrity. The summary by CVE is:

Race condition in GNU screen 4.0.3 allows local users to create or overwrite arbitrary files via a symlink attack on the /tmp/screen-exchange temporary file.

The bug was discovered 03/25/2009. The weakness was released 04/01/2009 with Debian as Bug 492104 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2009-1215 since 03/31/2009. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 38708 (Mandriva Linux Security Advisory : zsh (MDVSA-2009:108-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 9 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (49887) and Tenable (38708). Entry connected to this vulnerability is available at 47460.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
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CVSSv2info

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Exploitinginfo

Class: Race condition
CWE: CWE-362
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Nessus ID: 38708
Nessus Name: Mandriva Linux Security Advisory : zsh (MDVSA-2009:108-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63950
OpenVAS Name: Mandrake Security Advisory MDVSA-2009:108 (zsh)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Timelineinfo

03/25/2009 🔍
03/25/2009 +0 days 🔍
03/25/2009 +0 days 🔍
03/31/2009 +6 days 🔍
04/01/2009 +1 days 🔍
04/01/2009 +0 days 🔍
05/08/2009 +37 days 🔍
05/11/2009 +3 days 🔍
12/03/2009 +206 days 🔍
03/17/2015 +1930 days 🔍
08/09/2021 +2337 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: Bug 492104
Organization: Debian
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-1215 (🔍)
X-Force: 49887
Vulnerability Center: 21980 - GNU Screen 4.0.3 Screen-Exchange Temporary File Local Symlink Attack Vulnerability, Medium
SecurityFocus: 34521 - GNU screen Insecure Temporary File Creation Vulnerability
OSVDB: 53203 - GNU Screen /tmp/screen-exchange symlink

See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 08/09/2021 11:28
Changes: 03/17/2015 23:38 (74), 09/03/2019 11:10 (5), 08/09/2021 11:28 (3)
Complete: 🔍

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