CVE-2018-17942 - The convert_to_decimal function in vasnprintf.c in Gnulib before 2018-09-23 has a heap-based buffer

CVE-2018-17942

Summary

The convert_to_decimal function in vasnprintf.c in Gnulib before 2018-09-23 has a heap-based buffer overflow because memory is not allocated for a trailing '\0' character during %f processing.

References

https://github.com/coreutils/gnulib/commit/278b4175c9d7dd47c1a3071554aac02add3b3c35
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A5UQRNQE6XHMD5UYYHAU3VQWAYHIPMQS/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TMGHTVYH3KAFN34QXNSGEQDSTV7MCOQW/
https://lists.gnu.org/archive/html/bug-gnulib/2018-09/msg00107.html
https://savannah.gnu.org/bugs/?func=detailitem&item_id=54686

Vulnerable Configurations

cpe:2.3:a:gnu:gnulib:*:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gnulib:*:*:*:*:*:*:*:*

CVSS

Base:	6.8 (as of 24-08-2020 - 17:37)
Impact:
Exploitability:

CWE

CWE-787

CAPEC

Access

Vector	Complexity	Authentication
NETWORK	MEDIUM	NONE

Impact

Confidentiality	Integrity	Availability
PARTIAL	PARTIAL	PARTIAL

cvss-vector via4

AV:N/AC:M/Au:N/C:P/I:P/A:P

refmap via4

fedora	FEDORA-2020-663f619e9c FEDORA-2020-acac61cfd0
misc	https://github.com/coreutils/gnulib/commit/278b4175c9d7dd47c1a3071554aac02add3b3c35 https://lists.gnu.org/archive/html/bug-gnulib/2018-09/msg00107.html https://savannah.gnu.org/bugs/?func=detailitem&item_id=54686

Last major update

24-08-2020 - 17:37

Published

03-10-2018 - 08:29

Last modified

24-08-2020 - 17:37