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Vulnerabilities / CVE-2019-11705

critical

CVE-2019-11705

libical: Stack buffer overflow in icalrecur_add_bydayrules in icalrecur.c

Published Modified CWE 787
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, Amazon. Rated lower by Red Hat (high), Oracle (high), Ubuntu (medium).

Description

A flaw in Thunderbird's implementation of iCal causes a stack buffer overflow in icalrecur_add_bydayrules when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.

Affected packages and fixed versions

SourcePackageFixed in
amazon linux 2thunderbird, thunderbird-debuginfo60.7.2-2.amzn2.0.1
debian 11thunderbird1:60.7.1-1
debian 12thunderbird1:60.7.1-1
debian 13thunderbird1:60.7.1-1
debian 14thunderbird1:60.7.1-1
debian 8thunderbird1:60.7.1-1~deb8u1
debian 9thunderbird1:60.7.1-1~deb9u1
echothunderbird1:60.7.1-1
Oracle Linux 6thunderbird60.7.2-2.0.1.el6_10
Oracle Linux 7thunderbird60.7.2-2.0.1.el7_6
Oracle Linux 8thunderbird60.7.2-2.0.1.el8_0
Red Hatlibical, libical-develno fix listed
Show all 18 entries from 16 sources
SourcePackageFixed in
amazon linux 2thunderbird60.7.2-2.amzn2.0.1
amazon linux 2thunderbird-debuginfo60.7.2-2.amzn2.0.1
debian 11thunderbird1:60.7.1-1
debian 12thunderbird1:60.7.1-1
debian 13thunderbird1:60.7.1-1
debian 14thunderbird1:60.7.1-1
debian 8thunderbird1:60.7.1-1~deb8u1
debian 9thunderbird1:60.7.1-1~deb9u1
echothunderbird1:60.7.1-1
Oracle Linux 6thunderbird60.7.2-2.0.1.el6_10
Oracle Linux 7thunderbird60.7.2-2.0.1.el7_6
Oracle Linux 8thunderbird60.7.2-2.0.1.el8_0
Red Hatlibicalno fix listed
Red Hatlibical-develno fix listed
ubuntu 16.04thunderbird1:60.7.1+build1-0ubuntu0.16.04.1
ubuntu 18.04thunderbird1:60.7.1+build1-0ubuntu0.18.04.1
ubuntu 18.10thunderbird1:60.7.1+build1-0ubuntu0.18.10.1
ubuntu 19.04thunderbird1:60.7.1+build1-0ubuntu0.19.04.1

References

All 12 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.