An updated lha package that fixes a buffer overflow is now available.

LHA is an archiving and compression utility for LHarc format archives.

Lukasz Wojtow discovered a stack-based buffer overflow in all versions of lha up to and including version 1.14. A carefully created archive could allow an attacker to execute arbitrary code when a victim extracts or tests the archive. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0769 to this issue.

Buffer overflows were discovered in the command line processing of all versions of lha up to and including version 1.14. If a malicious user could trick a victim into passing a specially crafted command line to the lha command, it is possible that arbitrary code could be executed.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2004-0771 and CVE-2004-0694 to these issues.

Thomas Biege discovered a shell meta character command execution vulnerability in all versions of lha up to and including 1.14. An attacker could create a directory with shell meta characters in its name which could lead to arbitrary command execution. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0745 to this issue.

Users of lha should update to this updated package which contains backported patches and is not vulnerable to these issues.

Source code reviews of lha by Lukasz Wojtow, Thomas Biege, and others uncovered a number of vulnerabilities affecting lha :

- Buffer overflows when handling archives and filenames.
(CVE-2004-0694)

- Possible command execution via shell meta-characters when built with NOMKDIR. (CVE-2004-0745)

- Buffer overflow resulting in arbitrary code execution when handling long pathnames in LHZ archives. (CVE-2004-0769)

- Buffer overflow in the extract_one. (CVE-2004-0771)

Lukasz Wojtow discovered a stack-based buffer overflow in all versions of lha up to and including version 1.14. A carefully created archive could allow an attacker to execute arbitrary code when a victim extracts or tests the archive. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0769 to this issue.

Buffer overflows were discovered in the command line processing of all versions of lha up to and including version 1.14. If a malicious user can trick a victim into passing a specially crafted command line to the lha command, it is possible that arbitrary code could be executed.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2004-0771 and CVE-2004-0694 to these issues.

Thomas Biege discovered a shell meta character command execution vulnerability in all versions of lha up to and including 1.14. An attacker could create a directory with shell meta characters in its name which could lead to arbitrary command execution. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0745 to this issue.

Users of lha should update to this updated package

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-200409-13 (LHa: Multiple vulnerabilities)

    The command line argument as well as the archive parsing code of LHa lack     sufficient bounds checking. Furthermore, a shell meta character command     execution vulnerability exists in LHa, since it does no proper filtering on     directory names.
  Impact :

    Using a specially crafted command line argument or archive, an attacker can     cause a buffer overflow and could possibly run arbitrary code. The shell     meta character command execution could lead to the execution of arbitrary     commands by an attacker using directories containing shell meta characters     in their names.
  Workaround :

    There is no known workaround at this time.

An updated lha package that fixes a buffer overflow is now available.

LHA is an archiving and compression utility for LHarc format archives.

Lukasz Wojtow discovered a stack-based buffer overflow in all versions of lha up to and including version 1.14. A carefully created archive could allow an attacker to execute arbitrary code when a victim extracts or tests the archive. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0769 to this issue.

Buffer overflows were discovered in the command line processing of all versions of lha up to and including version 1.14. If a malicious user can trick a victim into passing a specially crafted command line to the lha command, it is possible that arbitrary code could be executed.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2004-0771 and CVE-2004-0694 to these issues.

Thomas Biege discovered a shell meta character command execution vulnerability in all versions of lha up to and including 1.14. An attacker could create a directory with shell meta characters in its name which could lead to arbitrary command execution. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0745 to this issue.

Users of lha should update to this updated package which contains backported patches and is not vulnerable to these issues.

ID	Name	Product	Family	Published	Updated	Severity
14625	RHEL 3 : lha (RHSA-2004:323)	Nessus	Red Hat Local Security Checks	9/1/2004	1/14/2021	critical
37618	FreeBSD : lha -- numerous vulnerabilities when extracting archives (273cc1a3-0d6b-11d9-8a8a-000c41e2cdad)	Nessus	FreeBSD Local Security Checks	4/23/2009	1/6/2021	critical
14692	Fedora Core 1 : lha-1.14i-12.2 (2004-294)	Nessus	Fedora Local Security Checks	9/9/2004	1/11/2021	critical
14693	Fedora Core 2 : lha-1.14i-14.1 (2004-295)	Nessus	Fedora Local Security Checks	9/9/2004	1/11/2021	critical
14694	GLSA-200409-13 : LHa: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	9/9/2004	1/6/2021	critical
14697	RHEL 2.1 : lha (RHSA-2004:440)	Nessus	Red Hat Local Security Checks	9/9/2004	1/14/2021	critical

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