CVE-2018-18605

MEDIUM

Description

A heap-based buffer over-read issue was discovered in the function sec_merge_hash_lookup in merge.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31, because _bfd_add_merge_section mishandles section merges when size is not a multiple of entsize. A specially crafted ELF allows remote attackers to cause a denial of service, as demonstrated by ld.

References

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00072.html

http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00008.html

http://www.securityfocus.com/bid/105754

https://deb.freexian.com/extended-lts/tracker/CVE-2018-18605

https://security.netapp.com/advisory/ntap-20190307-0003/

https://sourceware.org/bugzilla/show_bug.cgi?id=23804

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ab419ddbb2cdd17ca83618990f2cacf904ce1d61

Details

Source: MITRE

Published: 2018-10-23

Updated: 2019-10-31

Type: CWE-125

Risk Information

CVSS v2.0

Base Score: 4.3

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

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM