CVE & CISA-KEV Catalog

CVE-2018-11236

CRITICALEPSS 94th pctl
9.8
CVSS v3
NVD

Description

stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.

How to fix

Remediation Available
glibcDebian
Fixed in:2.27-4CVE-2018-11236
Fixed in:2.27-4CVE-2018-11236
Fixed in:2.27-4CVE-2018-11236
Fixed in:2.27-4CVE-2018-11236
eglibcUbuntu
Fixed in:2.19-0ubuntu6.15+esm3USN-6762-1
glibcUbuntu
Fixed in:2.23-0ubuntu11.3+esm6USN-6762-1
Fixed in:2.23-0ubuntu11.2USN-4416-1
Fixed in:2.27-3ubuntu1.2USN-4416-1
Fixed in:2.27-3ubuntu1.6+esm2USN-6762-1
libc6Ubuntu
Fixed in:2.19-0ubuntu6.15+esm3USN-6762-1
Fixed in:2.23-0ubuntu11.3+esm6USN-6762-1
Fixed in:2.23-0ubuntu11.2USN-4416-1
Fixed in:2.27-3ubuntu1.6+esm2USN-6762-1
Fixed in:2.27-3ubuntu1.2USN-4416-1

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 InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

7.40%probability of exploitation in 30 days
94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-16040Medium6.5100%-Fix
CVE-2019-11477High7.599%-Fix
CVE-2023-44443High7.894%-Fix
CVE-2014-0569High9.390%--
CVE-2017-3599High7.590%-Fix
CVE-2023-21716Critical9.882%-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.