Разработка эксплоитов для Linux. Часть 4 – обход ASCII armor и возврат в plt

Автор: sickness Блог автора: Перевод: Gh0St 07.04.2012 Разработка эксплоитов для Linux. Часть 4 – обход ASCII armor и возврат в plt. ПРИМЕЧАНИЕ: Перед чтением данного документа, рекомендуется ознакомиться со следующими работами: Руководство по написанию эксплоитов для Linux. Часть I – переполнени...

glibc: ldd unexpected code execution issue

ldd in the GNU C Library aka glibc or libc6 2.13 and earlier allows local users to gain privileges via a Trojan horse executable file linked with a modified loader that omits certain LDTRACELOADEDOBJECTS checks. NOTE: the GNU C Library vendor states "This is just nonsense. There are a gazillion...

glibc: Suid mount helpers fail to anticipate RLIMIT_FSIZE

The addmntent function in the GNU C Library aka glibc or libc6 2.13 and earlier does not report an error status for failed attempts to write to the /etc/mtab file, which makes it easier for local users to trigger corruption of this file, as demonstrated by writes from a process with a small...

glibc: svc_run() produces high cpu usage when accept() fails with EMFILE error

A denial of service flaw was found in the remote procedure call RPC implementation in glibc. A remote attacker able to open a large number of connections to an RPC service that is using the RPC implementation from glibc, could use this flaw to make that service use an excessive amount of CPU time...

FreeBSD Security Advisory FreeBSD-SA-11:07.chroot

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-11:07.chroot Security Advisory The FreeBSD Project Topic: Code execution via chrooted ftpd Category: core Module: libc Announced: 2011-12-23 Affects: All supporte...

FreeBSD-SA-11:07.chroot

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-11:07.chroot Security Advisory The FreeBSD Project Topic: Code execution via chrooted ftpd Category: core Module: libc Announced: 2011-12-23 Affects: All supporte...

FreeBSD libc code execution

lib/nsscompat.so.1 library in chroot environment is loaded. Vulnerability is used in-the-wild remotely against FTP-servers...

Libc - regcomp() Stack Exhaustion Denial of Service

Libc - regcomp Stack Exhaustion Denial of Service ? / PHP 5.4 5.3 memorylimit bypass exploit poc by Maksymilian Arciemowicz http://cxsecurity.com/ cxib a.T cxsecurity d0t com To show memorylimit in PHP php /www/memlimpoc.php 1 35000000 PHP Fatal error: Allowed memory size of 33554432 bytes...

Libc - 'regcomp()' Stack Exhaustion Denial of Service

? / PHP 5.4 5.3 memorylimit bypass exploit poc by Maksymilian Arciemowicz http://cxsecurity.com/ cxib a.T cxsecurity d0t com To show memorylimit in PHP php /www/memlimpoc.php 1 35000000 PHP Fatal error: Allowed memory size of 33554432 bytes exhausted tried to allocate 35000001 bytes in...

BSD libc/regcomp(3) Memory Management / Recursion

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Multiple BSD libc/regcomp3 Multiple Vulnerabilities Author: Maksymilian Arciemowicz http://www.netbsd.org/donations/ http://securityreason.com/ http://cxib.net/ Date: - - Dis.: 05.10.2011 - - Pub.: 04.11.2011 CVE: CVE-2011-3336 Affected Software: - -...

Solaris 10 (sparc) : 147713-01

SunOS 5.10: libc patch. Date this patch was last updated by Sun : Oct/07/11 %NASLMINLEVEL 70300 @DEPRECATED@ This script has been deprecated as the associated patch is not currently a recommended security fix. Disabled on 2011/11/14. C Tenable Network Security, Inc. if ! definedfunc"bnrandom"...

NetBSD 5.1 libc/net multiple functions stack buffer overflow

NetBSD 5.1 libc/net multiple functions stack buffer overflow Author: Maksymilian Arciemowicz http://netbsd.org/donations/ Date: - Dis.: 01.04.2011 - Pub.: 01.07.2011 CVE: CVE-2011-1656 CWE: CWE-121 Affected software: - NetBSD 5.1 fixed Affected functions: - getservbyname3 - getservbynamer3 -...

NetBSD 5.1 libc/net multiple functions stack buffer overflow

No description provided by source. NetBSD 5.1 libc/net multiple functions stack buffer overflow Author: Maksymilian Arciemowicz http://netbsd.org/donations/ Date: - Dis.: 01.04.2011 - Pub.: 01.07.2011 CVE: CVE-2011-1656 CWE: CWE-121 Affected software: - NetBSD 5.1 fixed Affected functions: -...

NetBSD 5.1 libc/net Stack Buffer Overflow

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 NetBSD 5.1 libc/net multiple functions stack buffer overflow Author: Maksymilian Arciemowicz http://netbsd.org/donations/ Date: - - Dis.: 01.04.2011 - - Pub.: 01.07.2011 CVE: CVE-2011-1656 CWE: CWE-121 Affected software: - - NetBSD 5.1 fixed Affected...

NetBSD 5.1 - 'libc/net' Multiple Stack Buffer Overflows

// source: https://www.securityfocus.com/bid/48528/info NetBSD is prone to a stack-based buffer-overflow vulnerability affecting multiple functions in the 'libc/net' library. Successful exploits may allow an attacker to execute arbitrary code in the context of the application using the affected...

CVE-2011-2168

Multiple integer overflows in the glob implementation in libc in OpenBSD before 4.9 might allow context-dependent attackers to have an unspecified impact via a crafted string, related to the GLOBAPPEND and GLOBDOOFFS flags, a different issue than CVE-2011-0418...

DEBIAN-CVE-2011-0418

The glob implementation in Pure-FTPd before 1.0.32, and in libc in NetBSD 5.1, does not properly expand expressions containing curly brackets, which allows remote authenticated users to cause a denial of service memory consumption via a crafted FTP STAT command...

Integer overflow

Multiple integer overflows in the glob implementation in libc in OpenBSD before 4.9 might allow context-dependent attackers to have an unspecified impact via a crafted string, related to the GLOBAPPEND and GLOBDOOFFS flags, a different issue than CVE-2011-0418...

CVE-2011-2168

CVE-2011-2168 affects the glob implementation in OpenBSD’s libc prior to 4.9. It involves multiple integer overflows in the glob code, related to GLOB_APPEND and GLOB_DOOFFS flags, which could let context-dependent attackers trigger an unspecified impact via a crafted string. The provided documen...

CVE-2011-2168

Multiple integer overflows in the glob implementation in libc in OpenBSD before 4.9 might allow context-dependent attackers to have an unspecified impact via a crafted string, related to the GLOBAPPEND and GLOBDOOFFS flags, a different issue than CVE-2011-0418...