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CVE-2018-25032

zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.

Published: Mar 25, 2022Updated: Aug 21, 2025 Sources: CVE List NVD GHSA BDU csafCWE-787
NVD MITRE
7.5CVSSHIGH
EPSS Score
51.7%
Top 1.2%
CISA KEV
Not in KEV
Exploits
3 Known
Remediation
Patch Available

Description

Nokogiri affected by zlib's Out-of-bounds Write vulnerability

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-787

Affected Products

nokogiriRubyGemsOSS Libraries
n/an/a
Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
rubygemspackage-ecosystemOSS Libraries
red hat inc.commercialUSOperating Systemsaka red hat
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
canonical ltd.commercialGBOperating Systemsaka canonical
and 43 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

3 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-v6gp-9mmm-c6p5
github.com
https://nvd.nist.gov/vuln/detail/CVE-2018-25032
nvd.nist.gov
https://github.com/madler/zlib/issues/605
github.com
and 82 more references View all →

Timeline

Published
Mar 25, 2022
Last Updated
Aug 21, 2025

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