CVE-2018-25032
HIGH
7.5
CVSS Score
Published: March 25, 2022 at 12:00 AM UTC
Updated: October 14, 2026 at 07:16 AM UTC
31 products affected across 11 vendorsmacOSDebian LinuxFedora· also runs on 12 platforms
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Severity
HIGH7.5
Exploit prediction
EPSS 52%
SSVC
PoC
Description
zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
10.15 ≤ v < 10.15.711.0 ≤ v < 11.6.612.0.0 ≤ v < 12.410.15.710.15.7 security_update_202010.15.7 security_update_2020-00110.15.7 security_update_2020-00510.15.7 security_update_2020-00710.15.7 security_update_2021-00110.15.7 security_update_2021-00210.15.7 security_update_2021-00310.15.7 security_update_2021-00610.15.7 security_update_2021-00710.15.7 security_update_2021-00810.15.7 security_update_2022-00110.15.7 security_update_2022-00210.15.7 security_update_2022-003
Affected range stops below 10.15.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.6.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.4, so it looks safe — our inference, not a vendor statement
Debian Linux· Debiandrupal
95%All versionsv < 11.9.18
Affected range stops below 11.9.18, so it looks safe — our inference, not a vendor statement
All versions10.3.0 ≤ v < 10.3.3610.4.0 ≤ v < 10.4.2610.5.0 ≤ v < 10.5.1710.6.0 ≤ v < 10.6.910.7.0 ≤ v < 10.7.510.8.0 ≤ v < 10.8.410.9.0 ≤ v < 10.9.2
Affected range stops below 10.3.36, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.4.26, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.5.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.6.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.7.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.8.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.9.2, so it looks safe — our inference, not a vendor statement
All versions
All versions11.0.0 ≤ v ≤ 11.70.2
Runs on — not affected
The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/madler/zlib/commit/5c44459c3b28a9bd3283aaceab7c615f8020c531
- https://github.com/madler/zlib/compare/v1.2.11...v1.2.12
- https://github.com/madler/zlib/issues/605
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DCZFIJBJTZ7CL5QXBFKTQ22Q26VINRUF/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DF62MVMH3QUGMBDCB3DY2ERQ6EBHTADB/
References (35)
Mailing ListThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2022/May/33Mailing ListThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2022/May/35Mailing ListThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2022/May/38Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/03/25/2Mailing ListExploitThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/03/26/1Third Party Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdfPatchThird Party Advisory
Source: [email protected]
https://github.com/madler/zlib/commit/5c44459c3b28a9bd3283aaceab7c615f8020c531PatchThird Party Advisory
Source: [email protected]
https://github.com/madler/zlib/compare/v1.2.11...v1.2.12SSVC — Action Prioritization
SSVCPoCAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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