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CVE-2010-1938

Status Candidate

Overview

Off-by-one error in the __opiereadrec function in readrec.c in libopie in OPIE 2.4.1-test1 and earlier, as used on FreeBSD 6.4 through 8.1-PRERELEASE and other platforms, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via a long username, as demonstrated by a long USER command to the FreeBSD 8.0 ftpd.

Related Files

Debian Security Advisory 2281-1
Posted Jul 21, 2011
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2281-1 - Sebastian Krahmer discovered that opie, a system that makes it simple to use One-Time passwords in applications, is prone to a privilege escalation (CVE-2011-2490) and an off-by-one error, which can lead to the execution of arbitrary code (CVE-2011-2489). Adam Zabrocki and Maksymilian Arciemowicz also discovered another off-by-one error (CVE-2010-1938), which only affects the lenny version as the fix was already included for squeeze.

tags | advisory, arbitrary
systems | linux, debian
advisories | CVE-2011-2489, CVE-2011-2490, CVE-2010-1938
SHA-256 | c1534265ead6607e9cdaa8776430d7bb5a00f79dbdf8d6a6931105d8ec20bf6d
Ubuntu Security Notice 955-2
Posted Jun 23, 2010
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 955-2 - USN-955-1 fixed vulnerabilities in OPIE. This update provides rebuilt libpam-opie packages against the updated libopie library. Original advisory details: Maksymilian Arciemowicz and Adam Zabrocki discovered that OPIE incorrectly handled long usernames. A remote attacker could exploit this with a crafted username and make applications linked against libopie crash, leading to a denial of service.

tags | advisory, remote, denial of service, vulnerability
systems | linux, ubuntu
advisories | CVE-2010-1938
SHA-256 | 6d881d1bf9449ce4551c894d833aa443a26b38c042725b55ac1b136dc42f49db
Ubuntu Security Notice 955-1
Posted Jun 23, 2010
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 955-1 - Maksymilian Arciemowicz and Adam Zabrocki discovered that OPIE incorrectly handled long usernames. A remote attacker could exploit this with a crafted username and make applications linked against libopie crash, leading to a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2010-1938
SHA-256 | 507803c47313ade3c813f28b126c91b99fa0c93c366cc7954e2e3af2d7f85dd0
OPIE Off-By-One Stack Overflow Nmap NSE Script
Posted May 28, 2010
Authored by Ange Gutek

OPIE off-by-one stack overflow nmap .nse script file.

tags | tool, overflow, nmap
systems | unix
advisories | CVE-2010-1938
SHA-256 | b74a93bb6e0c9f96d0f3f1d36ffc30f0dc2f7c656db759c80b3d81076c9f98a5
FreeBSD 8.0 ftpd Off-By-One Proof Of Concept
Posted May 28, 2010
Authored by Adam Zabrocki, Maksymilian Arciemowicz

FreeBSD version 8.0 ftpd off-by-one proof of concept exploit.

tags | exploit, proof of concept
systems | freebsd
advisories | CVE-2010-1938
SHA-256 | a17d270d62782bdb0279584ea2dad8c8fe353c35767657f09ffda201da15d4f5
FreeBSD Security Advisory - OPIE Off-By-One Stack Overflow
Posted May 28, 2010
Site security.freebsd.org

FreeBSD Security Advisory - A programming error in the OPIE library could allow an off-by-one buffer overflow to write a single zero byte beyond the end of an on-stack buffer.

tags | advisory, overflow
systems | freebsd
advisories | CVE-2010-1938
SHA-256 | 131cb41ee3226c91716b15316e0d2870cb7092520923a4ace9a5c051500f74a1
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