CVE-2018-18521: canonical ubuntu_linux Divide By Zero
CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2018-18521DEBIAN-CVE-2018-18521
Published 19-10-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-18521 is a medium (CVSS 5.5) Divide By Zero vulnerability in canonical ubuntu_linux. EPSS estimates a 1.75% chance of exploitation in the next 30 days, higher than 77.5% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
1.75%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 11 · Related 7Timeline
- 19-10-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Divide-by-zero vulnerabilities in the function arlib_add_symbols() in arlib.c in elfutils 0.174 allow remote attackers to cause a denial of service (application crash) with a crafted ELF file, as demonstrated by eu-ranlib, because a zero sh_entsize is mishandled.
CVSS metrics
5 scores · 3 sources · 3 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Medium 5.5Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesSingle source
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.75%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
0.00 pp
From 1.75% on 18-09-2026
18-09-202618-10-2026
EPSS score1.75%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (sourceware.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Redhat3 products
Debian2 products
- elfutils< 0.175-1
- debian_linuxEOL8.0 | 9.0
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 18.10
Elfutils_project1 product
- elfutils0.174
Opensuse1 product
- leapEOL15.0 | 15.1
Ubuntu1 product
- elfutils< 0.158-0ubuntu5.3+esm1 | < 0.165-3ubuntu1.2 | < 0.170-0.4ubuntu0.1
6 vendors · 9 products
References
12 links
lists.debian.org/debian-lts-announce/2019/02/msg00036.htmlMailing ListX Refsource MLISTThird Party Advisory- sourceware.org/ml/elfutils-devel/2018-q4/msg00055.htmlX Refsource MISCMailing ListPatchThird Party AdvisoryREPORT
- sourceware.org/bugzilla/show_bug.cgi?id=23786X Refsource MISCExploitIssue TrackingThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00052.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2021/10/msg00030.htmlMailing ListX Refsource MLISTThird Party Advisory