Is CVE-2018-18520 in the CISA KEV catalog?

No. CVE-2018-18520 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-18520?

CVE-2018-18520 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2018-18520?

CVE-2018-18520 has an EPSS score of 2.79% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-18520?

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

CVE & CISA-KEV Catalog

CVE-2018-18520

MEDIUMEPSS 85th pctl

6.5

CVSS v3

NVD

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.

CWE-119Buffer Overflow

How to fix

Remediation Available

elfutilsDebian

Fixed in:0.175-1CVE-2018-18520

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:0.165-3ubuntu1.2+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

libdw1Ubuntu

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

libelf1Ubuntu

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:0.170-0.4ubuntu0.1USN-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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.79%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch1

sourceware.org

Exploit1

sourceware.org

Third-Party Advisory5

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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.