Linux Kernel up to 2.4.24/2.6.2 do_mremap memory corruption

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4.5$0-$5k0.00

A vulnerability was found in Linux Kernel up to 2.4.24/2.6.2 (Operating System). It has been classified as critical. This affects the function do_mremap. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The do_mremap function for the mremap system call in Linux 2.2 to 2.2.25, 2.4 to 2.4.24, and 2.6 to 2.6.2, does not properly check the return value from the do_munmap function when the maximum number of VMA descriptors is exceeded, which allows local users to gain root privileges, a different vulnerability than CAN-2003-0985.

The weakness was shared 02/18/2004 by Paul Starzetz with isec.pl (Website). It is possible to read the advisory at isec.pl. This vulnerability is uniquely identified as CVE-2004-0077. The attack can only be done within the local network. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at securiteam.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 15290 (Debian DSA-453-1 : linux-kernel-2.2.20-i386+m68k+powerpc - failing function and TLB flush), 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.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (15244), Tenable (15290) and Exploit-DB (154). Further details are available at vuldb.com.

Productinfo

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.5

VulDB Base Score: 5.0
VulDB Temp Score: 4.5
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

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

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Nessus ID: 15290
Nessus Name: Debian DSA-453-1 : linux-kernel-2.2.20-i386+m68k+powerpc - failing function and TLB flush
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OpenVAS ID: 53138
OpenVAS Name: Debian Security Advisory DSA 438-1 (kernel)
OpenVAS File: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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Patch: kernel.org

Timelineinfo

02/18/2004 🔍
02/18/2004 +0 days 🔍
02/18/2004 +0 days 🔍
02/18/2004 +0 days 🔍
02/18/2004 +0 days 🔍
02/19/2004 +0 days 🔍
03/03/2004 +13 days 🔍
03/03/2004 +0 days 🔍
09/29/2004 +210 days 🔍
07/25/2005 +299 days 🔍
03/09/2021 +5706 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: isec.pl
Researcher: Paul Starzetz
Organization: isec.pl
Status: Not defined

CVE: CVE-2004-0077 (🔍)
OVAL: 🔍

X-Force: 15244 - Linux kernel do_mremap allows elevated privileges, High Risk
Vulnerability Center: 8646 - Privilege Elevation in Linux Kernel 2.2 - 2.2.25, 2.4 - 2.4.24, 2.6 - 2.6.2 via Mremap System Call, Medium
SecuriTeam: securiteam.com
SecurityFocus: 9686 - Linux Kernel do_mremap Function VMA Limit Local Privilege Escalation Vulnerability
Secunia: 10897 - Linux Kernel "mremap()" Missing Return Value Checking Privilege Escalation, Less Critical
OSVDB: 3986 - Linux Kernel mremap() Missing Return Value Checking Privilege Escalation

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

Entryinfo

Created: 02/19/2004 14:37
Updated: 03/09/2021 11:41
Changes: 02/19/2004 14:37 (95), 10/08/2018 15:43 (3), 03/09/2021 11:41 (2)
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