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w3m: doesn't handle NULL in Common Name properly

🗓️ 27 Jul 2010 12:58:00Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 1 Views

w3m fails to handle NULL in certificate Common Name or Subject Alternative Name under ssl_verify_server, enabling a man in the middle attack.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux5i386w3m0:0.5.1-17.el5_5w3m-0:0.5.1-17.el5_5.i386.rpm
Red Hat Enterprise Linux5ia64w3m0:0.5.1-17.el5_5w3m-0:0.5.1-17.el5_5.ia64.rpm
Red Hat Enterprise Linux5ppcw3m0:0.5.1-17.el5_5w3m-0:0.5.1-17.el5_5.ppc.rpm
Red Hat Enterprise Linux5s390xw3m0:0.5.1-17.el5_5w3m-0:0.5.1-17.el5_5.s390x.rpm
Red Hat Enterprise Linux5x86_64w3m0:0.5.1-17.el5_5w3m-0:0.5.1-17.el5_5.x86_64.rpm
Red Hat Enterprise Linux5i386w3m-debuginfo0:0.5.1-17.el5_5w3m-debuginfo-0:0.5.1-17.el5_5.i386.rpm
Red Hat Enterprise Linux5ia64w3m-debuginfo0:0.5.1-17.el5_5w3m-debuginfo-0:0.5.1-17.el5_5.ia64.rpm
Red Hat Enterprise Linux5ppcw3m-debuginfo0:0.5.1-17.el5_5w3m-debuginfo-0:0.5.1-17.el5_5.ppc.rpm
Red Hat Enterprise Linux5s390xw3m-debuginfo0:0.5.1-17.el5_5w3m-debuginfo-0:0.5.1-17.el5_5.s390x.rpm
Red Hat Enterprise Linux5x86_64w3m-debuginfo0:0.5.1-17.el5_5w3m-debuginfo-0:0.5.1-17.el5_5.x86_64.rpm
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25 Jun 2026 10:36Current
6.9Medium risk
Vulners AI Score6.9
CVSS 26.8
EPSS0.01491
1