mtr split_redraw() buffer overflow

mtr-splitredraw-bo (42535) The risk level is classified as HighHigh Risk

Description:

mtr is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the split_redraw function when the -p or --split option is enabled. By persuading a victim to connect to a DNS server containing a specially-crafted host name, a remote attacker could overflow a buffer and execute arbitrary code with elevated privileges or cause the application to crash.

*CVSS:

Base Score: 5.1
  Access Vector: Network
  Access Complexity: High
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 4.4
  Exploitability: Proof-of-Concept
  Remediation Level: Unavailable
  Report Confidence: Uncorroborated

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of Mtr (0.73 or later), available from the Mtr Web site. See References.

References:

  • BugTraq Mailing List, Mon May 19 2008 - 15:37:39 CDT: Mtr - remote and local stack overflow - uncomment situation in libresolv..
  • MTR Web site: MTR.
  • BID-29290: mtr 'split.c' Remote Stack Buffer Overflow Vulnerability
  • CVE-2008-2357: Stack-based buffer overflow in the split_redraw function in split.c in mtr before 0.73, when invoked with the -p (aka --split) option, allows remote attackers to execute arbitrary code via a crafted DNS PTR record. NOTE: it could be argued that this is a vulnerability in the ns_name_ntop function in resolv/ns_name.c in glibc and the proper fix should be in glibc; if so, then this should not be treated as a vulnerability in mtr.
  • DSA-1587: mtr -- buffer overflow
  • GLSA-200806-01: mtr: Stack-based buffer overflow
  • MDVSA-2008:176: mtr
  • OSVDB ID: 45350: Mtr split.c split_redraw() Function Resolved Hostname Handling Remote Overflow
  • SA30312: Mtr "split_redraw()" Buffer Overflow Vulnerability
  • SECTRACK ID: 1020046: MTR Buffer Overflow in split_redraw() Function May Let Remote and Local Users Execute Arbitrary Code
  • SUSE-SR:2008:014: [security-announce] SUSE Security Summary Report SUSE-SR:2008:014

Platforms Affected:

  • BitWizard Mtr 0.72
  • Debian Debian Linux 4.0
  • Gentoo Linux
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64

Reported:

May 19, 2008

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