Medium severity · published Oct 19, 2018
CVE-2018-18520
An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174
6.5
CVSS
2.8%
EPSS
No
On KEV
Description
An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.8% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
EL
Elfutils · Elfutils Project
through 0.174 · source: NVD
EL
Enterprise Linux Desktop · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
7.0 · source: NVD
EL
Enterprise Linux Workstation · Redhat
7.0 · source: NVD
LE
Leap · Opensuse
15.0; 15.1 · source: NVD
UL
Ubuntu Linux · Canonical
16.04; 18.04; 18.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-18520
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-18520
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00052.html
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2197
Mailing List
https://lists.debian.org/debian-lts-announce/2019/02/msg00036.html
Mailing List
https://lists.debian.org/debian-lts-announce/2021/10/msg00030.html
Exploit
https://sourceware.org/bugzilla/show_bug.cgi?id=23787
Mailing List
https://sourceware.org/ml/elfutils-devel/2018-q4/msg00057.html
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