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CVE-2010-2524

Status Candidate

Overview

The DNS resolution functionality in the CIFS implementation in the Linux kernel before 2.6.35, when CONFIG_CIFS_DFS_UPCALL is enabled, relies on a user's keyring for the dns_resolver upcall in the cifs.upcall userspace helper, which allows local users to spoof the results of DNS queries and perform arbitrary CIFS mounts via vectors involving an add_key call, related to a "cache stuffing" issue and MS-DFS referrals.

Related Files

Debian Security Advisory 2264-1
Posted Jun 19, 2011
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2264-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leak.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2010-2524, CVE-2010-3875, CVE-2010-4075, CVE-2010-4655, CVE-2011-0695, CVE-2011-0710, CVE-2011-0711, CVE-2011-0726, CVE-2011-1010, CVE-2011-1012, CVE-2011-1017, CVE-2011-1078, CVE-2011-1079, CVE-2011-1080, CVE-2011-1090, CVE-2011-1093, CVE-2011-1160, CVE-2011-1163, CVE-2011-1170, CVE-2011-1171, CVE-2011-1172, CVE-2011-1173, CVE-2011-1180, CVE-2011-1182, CVE-2011-1477, CVE-2011-1493, CVE-2011-1577, CVE-2011-1593
MD5 | e4fc6508acdcc4816d4b46bbbcd75992
Ubuntu Security Notice USN-1083-1
Posted Mar 3, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1083-1 - Multiple vulnerabilities have been discovered and addressed in the Linux 2.6 kernel. Al Viro discovered a race condition in the TTY driver. Gleb Napatov discovered that KVM did not correctly check certain privileged operations. Dan Rosenberg discovered that the MOVE_EXT ext4 ioctl did not correctly check file permissions. Dan Rosenberg discovered that the swapexit xfs ioctl did not correctly check file permissions. Suresh Jayaraman discovered that CIFS did not correctly validate certain response packats. Many other issues have also been addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2009-4895, CVE-2010-0435, CVE-2010-2066, CVE-2010-2226, CVE-2010-2248, CVE-2010-2478, CVE-2010-2495, CVE-2010-2521, CVE-2010-2524, CVE-2010-2537, CVE-2010-2538, CVE-2010-2798, CVE-2010-2942, CVE-2010-2943, CVE-2010-2946, CVE-2010-2954, CVE-2010-2955, CVE-2010-2960, CVE-2010-2962, CVE-2010-2963, CVE-2010-3015, CVE-2010-3067, CVE-2010-3078, CVE-2010-3079, CVE-2010-3080, CVE-2010-3084, CVE-2010-3296, CVE-2010-3297
MD5 | bd92ad19b2e61a0c4474567dcf42cce9
Ubuntu Security Notice USN-1074-2
Posted Feb 28, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1074-2 - USN-1074-1 fixed vulnerabilities in linux-fsl-imx51 in Ubuntu 9.10. This update provides the corresponding updates for Ubuntu 10.04. Multiple vulnerabilities have been discovered and addressed in the Linux kernel. Al Viro discovered a race condition in the TTY driver. Dan Rosenberg discovered that the MOVE_EXT ext4 ioctl did not correctly check file permissions. Neil Brown discovered that NFSv4 did not correctly check certain write requests. David Howells discovered that DNS resolution in CIFS could be spoofed. Various other issues have also been addressed.

tags | advisory, kernel, spoof, vulnerability
systems | linux, ubuntu
advisories | CVE-2009-4895, CVE-2010-2066, CVE-2010-2226, CVE-2010-2240, CVE-2010-2248, CVE-2010-2478, CVE-2010-2495, CVE-2010-2521, CVE-2010-2524, CVE-2010-2538, CVE-2010-2798, CVE-2010-2803, CVE-2010-2942, CVE-2010-2943, CVE-2010-2946, CVE-2010-2954, CVE-2010-2955, CVE-2010-2959, CVE-2010-2962, CVE-2010-2963, CVE-2010-3015, CVE-2010-3067, CVE-2010-3078, CVE-2010-3079, CVE-2010-3080, CVE-2010-3081, CVE-2010-3084, CVE-2010-3296
MD5 | 3c50452827e25742bef7840b721455f6
Ubuntu Security Notice USN-1074-1
Posted Feb 26, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1074-1 - Multiple vulnerabilities have been discovered and addressed in the Linux kernel. Al Viro discovered a race condition in the TTY driver. Dan Rosenberg discovered that the MOVE_EXT ext4 ioctl did not correctly check file permissions. Neil Brown discovered that NFSv4 did not correctly check certain write requests. David Howells discovered that DNS resolution in CIFS could be spoofed. Various other issues have also been addressed.

tags | advisory, kernel, spoof, vulnerability
systems | linux, ubuntu
advisories | CVE-2009-4895, CVE-2010-2066, CVE-2010-2226, CVE-2010-2240, CVE-2010-2248, CVE-2010-2478, CVE-2010-2495, CVE-2010-2521, CVE-2010-2524, CVE-2010-2538, CVE-2010-2798, CVE-2010-2803, CVE-2010-2942, CVE-2010-2943, CVE-2010-2946, CVE-2010-2954, CVE-2010-2955, CVE-2010-2959, CVE-2010-2962, CVE-2010-2963, CVE-2010-3015, CVE-2010-3067, CVE-2010-3078, CVE-2010-3079, CVE-2010-3080, CVE-2010-3081, CVE-2010-3084, CVE-2010-3296
MD5 | 934d6a5d2bde45285650af4dbbaad8b2
Ubuntu Security Notice 1000-1
Posted Oct 20, 2010
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1000-1 - Various image updates have been provided. Joel Becker discovered that OCFS2 did not correctly validate on-disk symlink structures. Al Viro discovered a race condition in the TTY driver. Dan Rosenberg discovered that the MOVE_EXT ext4 ioctl did not correctly check file permissions. Dan Rosenberg discovered that the swapexit xfs ioctl did not correctly check file permissions. Suresh Jayaraman discovered that CIFS did not correctly validate certain response packets. Various other issues have also been addressed.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2009-4895, CVE-2010-2066, CVE-2010-2226, CVE-2010-2248, CVE-2010-2478, CVE-2010-2495, CVE-2010-2521, CVE-2010-2524, CVE-2010-2798, CVE-2010-2942, CVE-2010-2946, CVE-2010-2954, CVE-2010-2955, CVE-2010-2960, CVE-2010-2963, CVE-2010-3015, CVE-2010-3067, CVE-2010-3078
MD5 | 9a6e8a6cc188250442d7b66222a06fbe
Mandriva Linux Security Advisory 2010-172
Posted Sep 11, 2010
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2010-172 - Some vulnerabilities were discovered and corrected in the Linux kernel. Buffer overflow in the ecryptfs_uid_hash macro in fs/ecryptfs/messaging.c in the eCryptfs subsystem in the Linux kernel before 2.6.35 might allow local users to gain privileges or cause a denial of service via unspecified vectors. The DNS resolution functionality in the CIFS implementation in the Linux kernel before 2.6.35, when CONFIG_CIFS_DFS_UPCALL is enabled, relies on a user's keyring for the dns_resolver upcall in the cifs.upcall userspace helper, which allows local users to spoof the results of DNS queries and perform arbitrary CIFS mounts via vectors involving an add_key call, related to a cache stuffing issue and MS-DFS referrals. The do_anonymous_page function in mm/memory.c in the Linux kernel before 2.6.27.52, 2.6.32.x before 2.6.32.19, 2.6.34.x before 2.6.34.4, and 2.6.35.x before 2.6.35.2 does not properly separate the stack and the heap, which allows context-dependent attackers to execute arbitrary code by writing to the bottom page of a shared memory segment, as demonstrated by a memory-exhaustion attack against the X.Org X server. Integer overflow in the ext4_ext_get_blocks function in fs/ext4/extents.c in the Linux kernel before 2.6.34 allows local users to cause a denial of service via a write operation on the last block of a large file, followed by a sync operation.

tags | advisory, denial of service, overflow, arbitrary, kernel, local, spoof, vulnerability
systems | linux, mandriva
advisories | CVE-2010-2240, CVE-2010-2492, CVE-2010-2524, CVE-2010-3015
MD5 | 42e8224f2625e072bff3266c7756ac26
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