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CVE-2011-1769

Status Candidate

Overview

SystemTap 1.4 and earlier, when unprivileged (aka stapusr) mode is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) via a crafted ELF program with DWARF expressions that are not properly handled by a stap script that performs context variable access.

Related Files

Mandriva Linux Security Advisory 2011-155
Posted Oct 17, 2011
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2011-155 - SystemTap 1.4 and earlier, when unprivileged mode is enabled, allows local users to cause a denial of service via a crafted ELF program with DWARF expressions that are not properly handled by a stap script that performs context variable access. SystemTap 1.4, when unprivileged mode is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) via a crafted ELF program with DWARF expressions that are not properly handled by a stap script that performs stack unwinding. The updated packages have been patched to correct these issues.

tags | advisory, denial of service, local
systems | linux, mandriva
advisories | CVE-2011-1769, CVE-2011-1781
SHA-256 | 80054053ed9969577a37013c9fcadfd16d38cc9f72acdfa8f210d01aa5e47396
Mandriva Linux Security Advisory 2011-154
Posted Oct 17, 2011
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2011-154 - SystemTap 1.4 and earlier, when unprivileged mode is enabled, allows local users to cause a denial of service via a crafted ELF program with DWARF expressions that are not properly handled by a stap script that performs context variable access. The updated packages have been patched to correct this issue.

tags | advisory, denial of service, local
systems | linux, mandriva
advisories | CVE-2011-1769
SHA-256 | ddd707c9cdceac8c281bb0bfa5187242bbf66d1261d12e3532d40a3eb63b14c6
Red Hat Security Advisory 2011-0842-01
Posted Jun 1, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-0842-01 - SystemTap is an instrumentation system for systems running the Linux kernel, version 2.6. Developers can write scripts to collect data on the operation of the system. Two divide-by-zero flaws were found in the way SystemTap handled malformed debugging information in DWARF format. When SystemTap unprivileged mode was enabled, an unprivileged user in the stapusr group could use these flaws to crash the system. Additionally, a privileged user could trigger these flaws when tricked into instrumenting a specially-crafted ELF binary, even when unprivileged mode was not enabled. Various other issues were also addressed.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2011-1769, CVE-2011-1781
SHA-256 | 3c7427b5b95d584ff0f15f1cf948ace22383d21c18c9c82f90c5dc9830434834
Red Hat Security Advisory 2011-0841-01
Posted Jun 1, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-0841-01 - SystemTap is an instrumentation system for systems running the Linux kernel, version 2.6. Developers can write scripts to collect data on the operation of the system. A divide-by-zero flaw was found in the way SystemTap handled malformed debugging information in DWARF format. When SystemTap unprivileged mode was enabled, an unprivileged user in the stapusr group could use this flaw to crash the system. Additionally, a privileged user could trigger this flaw when tricked into instrumenting a specially-crafted ELF binary, even when unprivileged mode was not enabled. Various other issues were also addressed.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2011-1769
SHA-256 | 83a3245143352b55f2a14786aedf6c975c0e124352b29ce5e82166a801a48ca5
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