Lhaplus LZH archive extended header buffer overflow

lhaplus-lzh-header-bo (28102) The risk level is classified as HighHigh Risk

Description:

Lhaplus is vulnerable to a heap-based buffer overflow, caused by improper bounds checking of extended headers in an LZH archive. By creating a malicious LZH archive containing an overly large extended header value, a remote attacker could overflow a buffer and execute arbitrary code on the system, if the attacker could persuade a victim to extract the malicious archive.

Platforms Affected:

  • Lhaplus, Lhaplus 1.52

Remedy:

Upgrade to the latest version of Lhaplus (1.53 or later), available from the Lhaplus Web page. See References.

Consequences:

Gain Access

References:

  • Lhaplus Web page, HoeHoe.com at http://www7a.biglobe.ne.jp/~schezo/.
  • vuln.sg Vulnerability Research Advisory 2006-07-31 , Lhaplus LHA Extended Header Handling Buffer Overflow Vulnerability at http://vuln.sg/lhaplus152-en.html.
  • BID-19263: Lhaplus LHA Extended Header Handling Buffer Overflow Vulnerability
  • CVE-2006-4033: Heap-based buffer overflow in Lhaplus.exe in Lhaplus 1.52, and possibly earlier versions, allows remote attackers to execute arbitrary code via an LZH archive with a long header, as specified by the extendedHeaderSize.
  • OSVDB ID: 27667: Lhaplus LZH Archive Extended Header Processing Overflow
  • SA21256: Lhaplus "extended header size" Buffer Overflow
  • SECTRACK ID: 1016615: Lhaplus Buffer Overflow in Extracting LZH Archives Lets Remote Users Execute Arbitrary Code
  • VUPEN/ADV-2006-3076: Lhaplus extended header size LZH File Handling Client-Side Buffer Overflow Vulnerability

Reported:

Aug 01, 2006

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