PT-2013-4917 · Linux · Linux Kernel

Ken Fallon + 1 · Published 2013-08-14 · Updated 2023-02-13 · CVE-2013-4247

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.9.6

Description The issue is caused by an off-by-one error in the build unc path to root function in fs/cifs/connect.c, allowing remote attackers to cause a denial of service, resulting in memory corruption and system crash. This can be triggered via a DFS share mount operation that uses an unexpected DFS referral name length.

Recommendations For Linux kernel versions prior to 3.9.6, update to version 3.9.6 or later to resolve the issue. As a temporary workaround, consider restricting DFS share mount operations to minimize the risk of exploitation.

Exploit

Fix

DoS

Weakness Enumeration

CWE-189

Related Identifiers

CVE-2013-4247

USN-1919-1

USN-1936-1

Affected Products

Linux Kernel

References · 18

• 🔥 https://github.com/torvalds/linux/commit/1fc29bacedeabb278080e31bb9c1ecb49f143c3b · Exploit
• 🔥 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1fc29bacedeabb278080e31bb9c1ecb49f143c3b · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2013-4247 · Security Note
• https://osv.dev/vulnerability/CVE-2013-4247 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2013-4247 · Security Note
• http://kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.6 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2013-4247 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2013-4247 · Vendor Advisory
• https://ubuntu.com/security/CVE-2013-4247 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2013-4247 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1919-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1936-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2014-3002.html · Vendor Advisory
• https://t.me/cvenotify/42211 · Telegram Post
• http://openwall.com/lists/oss-security/2013/08/14 · Note