SB2010121301 - openSUSE update for exim

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Main Vulnerability Database SB2010121301

SB2010121301 - openSUSE update for exim

Published: December 13, 2010 Updated: September 28, 2019

Security Bulletin ID SB2010121301
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Heap-based buffer overflow (CVE-ID: CVE-2010-4344)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists in the string_vformat function in string.c due to heap-based buffer overflow. A remote attacker can trigger memory corruption and execute arbitrary code via an SMTP session that includes two MAIL commands in conjunction with a large message containing specially crafted headers, leading to improper rejection logging.

2) Privilege escalation (CVE-ID: CVE-2010-4345)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:A/U:Clear


The vulnerability allows a local user to escalate privileges on vulnerable system.

The vulnerability exists due to design error in Exim, when allowing local users to load arbitrary configuration file via the "spool_directory" directive. A local user can specify an alternate configuration file with a directive that contains arbitrary commands and execute arbitrary commands on the system with root privileges.

Successful exploitation of this vulnerability will allow a local user to gain root privileges on the system.


Remediation

Install update from vendor's website.

References