Vulnerability in Linux Kernel
CVE-2010-2524
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel
- VMware Esx — versions 4.0, 4.1
- Canonical Ubuntu Linux — versions 10.10, 6.06, 10.04
- SUSE Linux Enterprise Desktop — versions 11
- SUSE Linux Enterprise Server — versions 11
References
- www.redhat.com/support/errata/RHSA-2010-0610.html (vendor-advisory, Broken Link)
- www.ubuntu.com/usn/USN-1000-1 (vendor-advisory, Third Party Advisory)
- marc.info/ (mailing-list, Patch, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35 (Broken Link)
- secunia.com/advisories/43315 (Broken Link, third-party-advisory)
- marc.info/ (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.vmware.com/security/advisories/VMSA-2011-0003.html (Patch, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- www.securityfocus.com/archive/1/516397/100/0/threaded (mailing-list, Third Party Advisory, VDB Entry)
Frequently asked questions
- What is CVE-2010-2524?
- CVE-2010-2524 is a high-severity vulnerability in Linux Kernel. CVSS score: 7.8/10. Published 2010-09-08.
- How severe is CVE-2010-2524?
- High severity. CVSS v3 base score is 7.8 out of 10.