CVE-2015-8077

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-12-03 · updated 2026-06-17
Weakness: CWE-189

Description

Integer overflow in the index_urlfetch function in imap/index.c in Cyrus IMAP 2.3.19, 2.4.18, and 2.5.6 allows remote attackers to have unspecified impact via vectors related to urlfetch range checks and the start_octet variable. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-8076.

Affected products

cyrusimap Cyrus IMAP: 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5 (+35)
openSUSE Leap: 42.1
Opensuse: 13.2

References

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00066.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00000.html
http://lists.opensuse.org/opensuse-updates/2015-11/msg00156.html
http://lists.opensuse.org/opensuse-updates/2015-12/msg00015.html
http://www.openwall.com/lists/oss-security/2015/09/30/3
http://www.openwall.com/lists/oss-security/2015/11/04/3
http://www.securitytracker.com/id/1034282
https://cyrus.foundation/cyrus-imapd/commit/?id=745e161c834f1eb6d62fc14477f51dae799e1e08
https://docs.cyrus.foundation/imap/release-notes/2.5/x/2.5.7.html
https://lists.andrew.cmu.edu/pipermail/cyrus-devel/2015-October/003534.html
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00066.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00000.html

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