Is CVE-2017-18258 in the CISA KEV catalog?

No. CVE-2017-18258 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-18258?

CVE-2017-18258 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2017-18258?

CVE-2017-18258 has an EPSS score of 2.71% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-18258?

Upgrade libxml2 on debian 11 to 2.9.10+dfsg-2 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2017-18258

MEDIUMEPSS 84th pctl

6.5

CVSS v3

NVD

Description

The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.

CWE-770Allocation of Resources Without Limits or Throttling

How to fix

Remediation Available

libxml2Debian

Fixed in:2.9.10+dfsg-2CVE-2017-18258

libxml2Ubuntu

Fixed in:2.9.1+dfsg1-3ubuntu4.13USN-3739-1

Fixed in:2.9.3+dfsg1-1ubuntu0.6USN-3739-1

Fixed in:2.9.4+dfsg1-6.1ubuntu1.2USN-3739-1

libxml2-utilsUbuntu

Fixed in:2.9.1+dfsg1-3ubuntu4.13USN-3739-1

Fixed in:2.9.3+dfsg1-1ubuntu0.6USN-3739-1

Fixed in:2.9.4+dfsg1-6.1ubuntu1.2USN-3739-1

python-libxml2Ubuntu

Fixed in:2.9.1+dfsg1-3ubuntu4.13USN-3739-1

Fixed in:2.9.3+dfsg1-1ubuntu0.6USN-3739-1

Fixed in:2.9.4+dfsg1-6.1ubuntu1.2USN-3739-1

python3-libxml2Ubuntu

Fixed in:2.9.4+dfsg1-6.1ubuntu1.2USN-3739-1

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

Exploit Intelligence

2.71%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Patch1

git.gnome.org

Other references5

Related Vulnerabilities

Other CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-50387	High	7.5	100%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2019-11479	High	7.5	92%	-	Fix
CVE-2024-27316	High	7.5	91%	-	Fix
CVE-2022-30522	High	7.5	90%	-	Fix
CVE-2019-9515	High	7.5	88%	-	Fix

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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.