CVE-2015-1473: Buffer Overflow
First published: Wed Apr 08 2015(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ubuntu Linux | =10.04 | |
| Ubuntu Linux | =12.04 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =14.10 | |
| GNU C Library | <=2.20 |
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Reference Links
- http://openwall.com/lists/oss-security/2015/02/04/1
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/72499
- http://www.ubuntu.com/usn/USN-2519-1
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=5bd80bfe9ca0d955bfbbc002781bc7b01b6bcb06
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commit%3Bh=5bd80bfe9ca0d955bfbbc002781bc7b01b6bcb06
Frequently Asked Questions
What is the severity of CVE-2015-1473?
CVE-2015-1473 has a medium severity rating, primarily affecting systems built on vulnerable versions of glibc.
How do I fix CVE-2015-1473?
To address CVE-2015-1473, upgrade the GNU C Library to version 2.21 or later.
Which versions of Ubuntu are affected by CVE-2015-1473?
CVE-2015-1473 affects Ubuntu versions 10.04, 12.04, 14.04, and 14.10.
What type of attack does CVE-2015-1473 expose systems to?
CVE-2015-1473 could allow attackers to exploit a denial of service condition, such as segmentation violations.
Is CVE-2015-1473 specific to certain applications?
CVE-2015-1473 is not limited to specific applications but affects any application relying on vulnerable versions of glibc.
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