The crypto API in the Linux kernel through 3.9-rc8 does not initialize certain length variables, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call, related to the hash_recvmsg function in crypto/algif_hash.c and the skcipher_recvmsg function in crypto/algif_skcipher.c.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2013-3076 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue does not affect the versions of Linux kernel as shipped with
Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.
This issue affects the version of the kernel package as shipped with
Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise MRG 2
may address this issue.
| Base Score | 2.1 |
|---|---|
| Base Metrics | AV:L/AC:L/Au:N/C:P/I:N/A:N |
| Access Vector | Local |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | None |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) | RHSA-2013:0829 | 2013-05-20 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Not affected |
| Red Hat Enterprise Linux 5 | kernel | Not affected |
Vulmon