CVE-2010-2524

Description

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.

7.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.03%

Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory mandriva.com

Affected: n/a n/a

References

Link	Tags
http://www.redhat.com/support/errata/RHSA-2010-0610.html	vendor advisory broken link
http://www.ubuntu.com/usn/USN-1000-1	third party advisory vendor advisory
http://marc.info/?l=oss-security&m=128078387328921&w=2	mailing list third party advisory patch
http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html	mailing list third party advisory vendor advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35	broken link
http://secunia.com/advisories/43315	third party advisory broken link
http://marc.info/?l=oss-security&m=128072090331700&w=2	mailing list third party advisory patch
http://www.vmware.com/security/advisories/VMSA-2011-0003.html	third party advisory patch
https://bugzilla.redhat.com/show_bug.cgi?id=612166	issue tracking third party advisory patch
http://www.securityfocus.com/archive/1/516397/100/0/threaded	mailing list vdb entry third party advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4c0c03ca54f72fdd5912516ad0a23ec5cf01bda7
http://www.mandriva.com/security/advisories?name=MDVSA-2010:172	vendor advisory broken link
http://marc.info/?l=oss-security&m=128080755321157&w=2	third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2010-2524?: CVE-2010-2524 has been scored as a high severity vulnerability.
How to fix CVE-2010-2524?: To fix CVE-2010-2524, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2010-2524 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2010-2524 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.