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CVE-2015-1473

Status Candidate

Overview

The ADDW macro in stdio-common/vfscanf.c in the GNU C Library (aka glibc or libc6) before 2.21 does not properly consider data-type size during a risk-management decision for use of the alloca function, which might allow context-dependent attackers to cause a denial of service (segmentation violation) or overwrite memory locations beyond the stack boundary via a long line containing wide characters that are improperly handled in a wscanf call.

Related Files

Red Hat Security Advisory 2015-2589-01
Posted Dec 9, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-2589-01 - The glibc packages provide the standard C libraries, POSIX thread libraries, standard math libraries, and the Name Server Caching Daemon used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. It was discovered that the nss_files backend for the Name Service Switch in glibc would return incorrect data to applications or corrupt the heap. A local attacker could potentially use this flaw to execute arbitrary code on the system. It was discovered that, under certain circumstances, glibc's getaddrinfo() function would send DNS queries to random file descriptors. An attacker could potentially use this flaw to send DNS queries to unintended recipients, resulting in information disclosure or data loss due to the application encountering corrupted data.

tags | advisory, arbitrary, local, info disclosure
systems | linux, redhat, osx
advisories | CVE-2013-7423, CVE-2015-1472, CVE-2015-1473, CVE-2015-1781, CVE-2015-5277
SHA-256 | 500d94725a7bca027910198d11bcaf63c36b7385c61ae995036c7436f222d112
Red Hat Security Advisory 2015-2199-07
Posted Nov 20, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-2199-07 - The glibc packages provide the standard C libraries, POSIX thread libraries, standard math libraries, and the Name Server Caching Daemon used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. It was discovered that, under certain circumstances, glibc's getaddrinfo() function would send DNS queries to random file descriptors. An attacker could potentially use this flaw to send DNS queries to unintended recipients, resulting in information disclosure or data loss due to the application encountering corrupted data.

tags | advisory, info disclosure
systems | linux, redhat, osx
advisories | CVE-2013-7423, CVE-2015-1472, CVE-2015-1473, CVE-2015-1781
SHA-256 | f94e9bae1ee9312a7c4a7f82ecb9725f410c0b7a137de93a1b8c44897482e087
Mandriva Linux Security Advisory 2015-168
Posted Mar 31, 2015
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2015-168 - Updated glibc packages fix multiple security vulnerabilities.

tags | advisory, vulnerability
systems | linux, mandriva
advisories | CVE-2012-3406, CVE-2014-0475, CVE-2014-4043, CVE-2014-5119, CVE-2014-6040, CVE-2014-7817, CVE-2014-9402, CVE-2015-1472, CVE-2015-1473
SHA-256 | 0412f59ba60e6f3546c153206b4f490e8e4d6187358607bb442d3ffcaa511903
Ubuntu Security Notice USN-2519-1
Posted Feb 26, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2519-1 - Arnaud Le Blanc discovered that the GNU C Library incorrectly handled file descriptors when resolving DNS queries under high load. This may cause a denial of service in other applications, or an information leak. This issue only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. It was discovered that the GNU C Library incorrectly handled receiving a positive answer while processing the network name when performing DNS resolution. A remote attacker could use this issue to cause the GNU C Library to hang, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2013-7423, CVE-2014-9402, CVE-2015-1472, CVE-2015-1473
SHA-256 | 1b157586f2ed9c751bb741fa0ea8c7d75c284f263ee1da14e33f7921b5b19b1d
Debian Security Advisory 3169-1
Posted Feb 24, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3169-1 - Several vulnerabilities have been fixed in eglibc, Debian's version of the GNU C library.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2012-3406, CVE-2013-7424, CVE-2014-4043, CVE-2014-9402, CVE-2015-1472, CVE-2015-1473
SHA-256 | 3fe931b7ce23c334ac550e9b3f9ce61c02f2b4cad71b1b7018abfe10daf65a20
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