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CVE-2025-32989— Gnutls: vulnerability in gnutls sct extension parsing

Quick assessment

Affected
CVE-2025-32989
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GnuTLS是GnuTLS开源的一款免费的用于实现SSL、TLS和DTLS协议的安全通信库。 GnuTLS存在信任管理问题漏洞，该漏洞源于X.509证书解析时处理CT SCT扩展不当，可能导致信息泄露。

CVSS 5.3 · Medium EPSS 1.18% · P65

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 14

VendorProduct Version RangeStatus
None None < 3.8.10 affected
Red Hat Red Hat Ceph Storage 7 7< * unaffected
Red Hat Red Hat Discovery 2 2.3.0-1760554384< * unaffected
Red Hat Red Hat Enterprise Linux 10 0:3.8.9-9.el10_0.14< * unaffected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any unknown
Red Hat Red Hat Enterprise Linux 8 any unaffected
Red Hat Red Hat Enterprise Linux 9 0:3.8.3-6.el9_6.2< * unaffected
0:3.8.3-6.el9_6.2< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:3.7.6-21.el9_2.4< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:3.8.3-4.el9_4.4< * unaffected
Red Hat Red Hat Hardened Images 3.8.12-1.1.hum1< * unaffected
Red Hat Red Hat Insights proxy 1.5 1.5.7-1759331989< * unaffected
Red Hat Red Hat OpenShift Container Platform 4 any affected

I. Basic Information for CVE-2025-32989

Vulnerability Information
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Vulnerability Title
Gnutls: vulnerability in gnutls sct extension parsing
Source: CVE Program / CVE List V5
Vulnerability Description
A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
GnuTLS 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GnuTLS是GnuTLS开源的一款免费的用于实现SSL、TLS和DTLS协议的安全通信库。 GnuTLS存在信任管理问题漏洞，该漏洞源于X.509证书解析时处理CT SCT扩展不当，可能导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 0 ~ 3.8.10 -
Red Hat Red Hat Enterprise Linux 10 0:3.8.9-9.el10_0.14 ~ * cpe:/o:redhat:enterprise_linux:10.0
Red Hat Red Hat Enterprise Linux 9 0:3.8.3-6.el9_6.2 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9 0:3.8.3-6.el9_6.2 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:3.7.6-21.el9_2.4 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:3.8.3-4.el9_4.4 ~ * cpe:/a:redhat:rhel_eus:9.4::appstream
Red Hat Red Hat Ceph Storage 7 7 ~ * cpe:/a:redhat:ceph_storage:7::el9
Red Hat Red Hat Discovery 2 2.3.0-1760554384 ~ * cpe:/a:redhat:discovery:2::el9
Red Hat Red Hat Hardened Images 3.8.12-1.1.hum1 ~ * cpe:/a:redhat:hummingbird:1
Red Hat Red Hat Insights proxy 1.5 1.5.7-1759331989 ~ * cpe:/a:redhat:insights_proxy:1.5::el9
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2025-32989

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III. Intelligence Information for CVE-2025-32989

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Vendor Advisories for CVE-2025-32989 (4)

Mailing List Discussions for CVE-2025-32989 (1)

IV. Related Vulnerabilities

Same weakness: CWE-295

V. Comments for CVE-2025-32989

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