CVE-2019-16239

Description

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

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 5.62% Top 15%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://t2.fi/schedule/2019/ not applicable
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WI7ZENFAWCHF2RU4NHPL2CU4WGZ4BNDJ/ vendor advisory
http://lists.infradead.org/pipermail/openconnect-devel/2019-September/005412.html broken link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HDMZGNBLZZKAGBI2PNXYWWKLD2LXKFH6/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FX56KYWC7X4ETV4P6HGJC7GZUEBITBBS/ vendor advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00003.html third party advisory mailing list
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00060.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00061.html mailing list third party advisory vendor advisory
https://www.debian.org/security/2020/dsa-4607 third party advisory vendor advisory
https://seclists.org/bugtraq/2020/Jan/31 third party advisory mailing list
https://usn.ubuntu.com/4565-1/ third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-16239?
CVE-2019-16239 has been scored as a critical severity vulnerability.
How to fix CVE-2019-16239?
To fix CVE-2019-16239, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-16239 being actively exploited in the wild?
It is possible that CVE-2019-16239 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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