CVE-2020-15917

common/session.c in Claws Mail before 3.17.6 has a protocol violation because suffix data after STARTTLS is mishandled.

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00090.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00002.htmlBroken Link, Mailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00060.htmlBroken Link, Mailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00051.htmlBroken Link, Mailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00013.htmlBroken Link, Mailing List, Third Party Advisory
• https://git.claws-mail.org/?p=claws.git%3Ba=blob%3Bf=RELEASE_NOTES
• https://git.claws-mail.org/?p=claws.git%3Ba=commit%3Bh=fcc25329049b6f9bd8d890f1197ed61eb12e14d5
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YVQB7NRBHO67Q74RS7RZCMW4ENRVBB4/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G7UX65342HRVDQML4G4GEVEUB764EUM5/
• https://security.gentoo.org/glsa/202007-56Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00090.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00002.htmlBroken Link, Mailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00060.htmlBroken Link, Mailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00051.htmlBroken Link, Mailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00013.htmlBroken Link, Mailing List, Third Party Advisory
• https://git.claws-mail.org/?p=claws.git%3Ba=blob%3Bf=RELEASE_NOTES
• https://git.claws-mail.org/?p=claws.git%3Ba=commit%3Bh=fcc25329049b6f9bd8d890f1197ed61eb12e14d5
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YVQB7NRBHO67Q74RS7RZCMW4ENRVBB4/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G7UX65342HRVDQML4G4GEVEUB764EUM5/
• https://security.gentoo.org/glsa/202007-56Third Party Advisory

Published

Jul 23, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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