Vulnerability Description
The ADDW macro in stdio-common/vfscanf.c in the GNU C Library (aka glibc or libc6) before 2.21 does not properly consider data-type size during a risk-management decision for use of the alloca function, which might allow context-dependent attackers to cause a denial of service (segmentation violation) or overwrite memory locations beyond the stack boundary via a long line containing wide characters that are improperly handled in a wscanf call.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Canonical | Ubuntu Linux | 10.04 |
| Gnu | Glibc | <= 2.20 |
Related Weaknesses (CWE)
References
- http://openwall.com/lists/oss-security/2015/02/04/1
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.h
- http://www.securityfocus.com/bid/72499
- http://www.ubuntu.com/usn/USN-2519-1
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commit%3Bh=5bd80bfe9ca0d95
- http://openwall.com/lists/oss-security/2015/02/04/1
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.h
- http://www.securityfocus.com/bid/72499
- http://www.ubuntu.com/usn/USN-2519-1
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commit%3Bh=5bd80bfe9ca0d95
FAQ
What is CVE-2015-1473?
CVE-2015-1473 is a vulnerability with a CVSS score of 6.4 (MEDIUM). The ADDW macro in stdio-common/vfscanf.c in the GNU C Library (aka glibc or libc6) before 2.21 does not properly consider data-type size during a risk-management decision for use of the alloca functio...
How severe is CVE-2015-1473?
CVE-2015-1473 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-1473?
Check the references section above for vendor advisories and patch information. Affected products include: Canonical Ubuntu Linux, Gnu Glibc.