CVE-2012-2123
The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR.
- CVSS 2.0
- 7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
- EPSS
- 0.42% probability · 35th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d52fc5dde171f030170a6cb78034d166b13c9445Broken Link
- http://rhn.redhat.com/errata/RHSA-2012-0670.htmlThird Party Advisory, VDB Entry
- http://rhn.redhat.com/errata/RHSA-2012-0743.htmlThird Party Advisory, VDB Entry
- http://www.debian.org/security/2012/dsa-2469Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.3Vendor Advisory
- http://www.openwall.com/lists/oss-security/2012/04/20/6Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/53166Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id?1027072Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=806722Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/75043VDB Entry
- https://github.com/torvalds/linux/commit/d52fc5dde171f030170a6cb78034d166b13c9445Third Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d52fc5dde171f030170a6cb78034d166b13c9445Broken Link
- http://rhn.redhat.com/errata/RHSA-2012-0670.htmlThird Party Advisory, VDB Entry
- http://rhn.redhat.com/errata/RHSA-2012-0743.htmlThird Party Advisory, VDB Entry
- http://www.debian.org/security/2012/dsa-2469Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.3Vendor Advisory
- http://www.openwall.com/lists/oss-security/2012/04/20/6Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/53166Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id?1027072Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=806722Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/75043VDB Entry
- https://github.com/torvalds/linux/commit/d52fc5dde171f030170a6cb78034d166b13c9445Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.