CVE-2019-16239

high-risk

Published 2019-09-17

process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.

Do I need to act?

8.5% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Openconnect

Fedora

Debian Linux

Ubuntu Linux

Leap

Debian Canonical Fedoraproject Opensuse Infradead

Broken Link http://lists.infradead.org/pipermail/openconnect-devel/2019-September/005412.htm...

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00060.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00061.html

Mailing List https://lists.debian.org/debian-lts-announce/2019/10/msg00003.html

Mailing List https://seclists.org/bugtraq/2020/Jan/31

Not Applicable https://t2.fi/schedule/2019/

Third Party Advisory https://usn.ubuntu.com/4565-1/

Third Party Advisory https://www.debian.org/security/2020/dsa-4607

Broken Link http://lists.infradead.org/pipermail/openconnect-devel/2019-September/005412.htm...

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00060.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00061.html

Mailing List https://lists.debian.org/debian-lts-announce/2019/10/msg00003.html

Mailing List https://seclists.org/bugtraq/2020/Jan/31

Not Applicable https://t2.fi/schedule/2019/

and 2 more references

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high-risk

Severity 32/34 · Critical

Exploitability 10/34 · Low

Exposure 16/34 · Moderate