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The vulnerability of Thunderbird email client, Firefox and Firefox ESR browsers relates to improper error handling when processing an inaccessible PAC file. This allows a malicious actor to specify a URL for the PAC file. If the server on which the PAC file is located becomes unavailable, OCSP requests are blocked, resulting in incorrect error pages being displayed.

🗓️ 04 Jul 2022 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec🔗 bdu.fstec.ru👁 2 Views

Thunderbird, Firefox, and Firefox ESR mishandle inaccessible PAC files, enabling PAC URL abuse to block OCSP and show errors.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ALT Linux		Security fix for the ALT Linux 10 package firefox-esr version 91.11.0-alt1
29 Jun 202200:00
–altlinux
ALT Linux		Security fix for the ALT Linux 10 package thunderbird version 102.0-alt1
29 Jun 202200:00
–altlinux
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in Mozilla Firefox affect IBM Cloud Pak for Multicloud Management Monitoring.
31 Jan 202314:47
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities of Mozilla Firefox (less than Firefox 102.2ESR) have affected Synthetic Playback Agent 8.1.4.0-8.1.4 IF16 - 2022.4.0
15 Nov 202205:24
–ibm
Tenable Nessus		Amazon Linux 2 : thunderbird (ALAS-2023-1951)
23 Feb 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : firefox, --advisory ALAS2FIREFOX-2023-013 (ALASFIREFOX-2023-013)
27 Sep 202300:00
–nessus
Tenable Nessus		AlmaLinux 9 : firefox (ALSA-2022:5481)
16 Nov 202200:00
–nessus
Tenable Nessus		AlmaLinux 9 : thunderbird (ALSA-2022:5482)
16 Nov 202200:00
–nessus
Tenable Nessus		CentOS 7 : firefox (RHSA-2022:5479)
2 Aug 202200:00
–nessus
Tenable Nessus		CentOS 7 : thunderbird (RHSA-2022:5480)
2 Aug 202200:00
–nessus
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SourceLink
mozillawww.mozilla.org/en-US/security/advisories/mfsa2022-24/
mozillawww.mozilla.org/en-US/security/advisories/mfsa2022-25/
mozillawww.mozilla.org/en-US/security/advisories/mfsa2022-26/
redoswww.redos.red-soft.ru/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-firefox-cve-2022-34479-cve-2022-34470-cve-2022-34468-cve-2022-34481-cve-2/
redoswww.redos.red-soft.ru/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-thunderbird-cve-2022-34479-cve-2022-34470-cve-2022-34468-cve-2022-34481-c/
security-trackerwww.security-tracker.debian.org/tracker/CVE-2022-34472
accesswww.access.redhat.com/security/cve/cve-2022-34472
goslinuxwww.goslinux.fssp.gov.ru/2726972/
xn--80ahaefyxhnwww.xn--80ahaefyxhn.xn--j1afgaq.xn--p1ai/bin/view/%D0%9E%D0%A1%D0%BD%D0%BE%D0%B2%D0%B0/%D0%9E%D0%B1%D0%BD%D0%BE%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F/2.5.1/
xn--80ahaefyxhnwww.xn--80ahaefyxhn.xn--j1afgaq.xn--p1ai/bin/view/%D0%9E%D0%A1%D0%BD%D0%BE%D0%B2%D0%B0/%D0%9E%D0%B1%D0%BD%D0%BE%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F/2.6/
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21 Nov 2023 00:00Current
6.5Medium risk
Vulners AI Score6.5
CVSS 36.1
CVSS 26.4
EPSS0.00645
ThunderbirdProxy Auto-ConfigRemote URLCertificate Status ProtocolError HandlingInaccessible PAC
2