Is CVE-2018-18521 in the CISA KEV catalog?

No. CVE-2018-18521 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-18521?

CVE-2018-18521 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2018-18521?

CVE-2018-18521 has an EPSS score of 1.82% (76th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-18521?

Upgrade elfutils on debian 11 to 0.175-1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2018-18521

MEDIUMEPSS 76th pctl

5.5

CVSS v3

NVD

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.

CWE-369

How to fix

Remediation Available

elfutilsDebian

Fixed in:0.175-1CVE-2018-18521

elfutilsUbuntu

Fixed in:0.158-0ubuntu5.3+esm1USN-6322-1

Fixed in:0.165-3ubuntu1.2+esm1USN-6322-1

Fixed in:0.165-3ubuntu1.2USN-4012-1

Fixed in:0.170-0.4ubuntu0.1USN-4012-1

Fixed in:0.170-0.4ubuntu0.1+esm1USN-6322-1

Fixed in:0.176-1.1ubuntu0.1USN-6322-1

libasm1Ubuntu

Fixed in:0.158-0ubuntu5.3+esm1USN-6322-1

Fixed in:0.165-3ubuntu1.2USN-4012-1

Fixed in:0.165-3ubuntu1.2+esm1USN-6322-1

Fixed in:0.170-0.4ubuntu0.1+esm1USN-6322-1

Fixed in:0.170-0.4ubuntu0.1USN-4012-1

Fixed in:0.176-1.1ubuntu0.1USN-6322-1

libdw1Ubuntu

Fixed in:0.158-0ubuntu5.3+esm1USN-6322-1

Fixed in:0.165-3ubuntu1.2+esm1USN-6322-1

Fixed in:0.165-3ubuntu1.2USN-4012-1

Fixed in:0.170-0.4ubuntu0.1+esm1USN-6322-1

Fixed in:0.170-0.4ubuntu0.1USN-4012-1

Fixed in:0.176-1.1ubuntu0.1USN-6322-1

libelf1Ubuntu

Fixed in:0.158-0ubuntu5.3+esm1USN-6322-1

Fixed in:0.165-3ubuntu1.2+esm1USN-6322-1

Fixed in:0.165-3ubuntu1.2USN-4012-1

Fixed in:0.170-0.4ubuntu0.1USN-4012-1

Fixed in:0.170-0.4ubuntu0.1+esm1USN-6322-1

Fixed in:0.176-1.1ubuntu0.1USN-6322-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploit Intelligence

1.82%probability of exploitation in 30 days

76thpercentile

Elevated risk: more likely to be exploited than 76% of all known CVEs.

References

Patch1

sourceware.org

Exploit1

sourceware.org

Third-Party Advisory5

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.