CVE-2015-1473
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…
Does this matter?
Lower severity and a low EPSS score (2.13%). Track it; it rarely justifies an emergency change on its own.
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 2.0
- 6.4 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:P
- EPSS
- 2.13% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- canonical/ubuntu linux · gnu/glibc
- Source
- cve@mitre.org
References
- 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%3Ba=commit%3Bh=5bd80bfe9ca0d955bfbbc002781bc7b01b6bcb06
- 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%3Ba=commit%3Bh=5bd80bfe9ca0d955bfbbc002781bc7b01b6bcb06
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.