ncompress long file name buffer overflow
| ncompress-filename-bo (10619) |  High Risk |
Description:
ncompress is vulnerable to a buffer overflow, caused by improper bounds checking of file names. By sending a file name of 1023 or more bytes to ncompress, a local attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges.
Platforms Affected:
- Gentoo, Linux
- RedHat, Enterprise Linux 2.1 ES
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 2.1 WS
- RedHat, Linux Advanced Workstation 2.1 Itanium
- Various vendors, ncompress 4.2.4 and prior
Remedy:
Apply the appropriate patch for your system. See References.
Consequences:
Gain Privileges
References:
- CIAC Information Bulletin P-062, Updated ncompress Package Fixes Security Issue and Bug at http://www.ciac.org/ciac/bulletins/p-062.shtml.
- Linux Security Audit Project Mailing List, Fri Jun 29 2001 - 09:23:38 BST, ncompress (and gzip? bzip2?) buffer overflow and why it matters at http://security-archive.merton.ox.ac.uk/security-audit-200106/0008.html.
- BID-11908: NCompress Long Filename Buffer Overflow Vulnerability
- CVE-2001-1413: Stack-based buffer overflow in the comprexx function for ncompress 4.2.4 and earlier, when used in situations that cross security boundaries (such as FTP server), may allow remote attackers to execute arbitrary code via a long filename argument.
- GLSA-200410-08: ncompress: Buffer overflow
- RHSA-2004-536: ncompress security update
- US-CERT VU#176363: ncompress vulnerable to buffer overflow via long filename
Reported:
Nov 20, 2001
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