CVE-2019-16239 json
process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chun…
published 2019-09-17 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7046
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.4%
- EPSS 3.4% chance of exploitation in 30 days, percentile 89%
- public exploits
- 0
- none known
Summary
process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.
Patch / fix
- infradead openconnect 8.05
- openconnect Debian 14, Debian 13, Debian 12 8.02-1.1
debian advisories DEBIAN-CVE-2019-16239
- openconnect Ubuntu 18.04 LTS 7.08-3ubuntu0.18.04.2
ubuntu advisories UBUNTU-CVE-2019-16239
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- openconnect SLED 12 SP4, SLE Workstation Extension 12 SP5, SLE Workstation Extension 12 SP4 7.08-3.4.1
- openconnect SLE Workstation Extension 15 SP1, SLE Workstation Extension 15 7.08-6.3.1
suse advisories SUSE-SU-2019:2744-2SUSE-SU-2019:2744-1SUSE-SU-2019:2737-1
- openconnect openSUSE Leap 15.0 7.08-lp150.5.3.1
- openconnect openSUSE Leap 15.1 7.08-lp151.6.3.1
opensuse advisories openSUSE-SU-2019:2388-1openSUSE-SU-2019:2385-1
Exploit prediction
3.45% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/WI7ZENFAWCHF2RU4NHPL2CU4WGZ4BNDJ/
vendor-advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/HDMZGNBLZZKAGBI2PNXYWWKLD2LXKFH6/
vendor-advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/FX56KYWC7X4ETV4P6HGJC7GZUEBITBBS/
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-10/msg00060.html
vendor-advisory, mailing-list, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-10/msg00061.html
vendor-advisory, mailing-list, third-party-advisory
-
debian.org
/security/2020/dsa-4607
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/4565-1/
vendor-advisory, third-party-advisory
-
t2.fi
/schedule/2019/
not-applicable
-
lists.infradead.org
/pipermail/openconnect-devel/2019-September/005412.html
broken-link
-
lists.debian.org
/debian-lts-announce/2019/10/msg00003.html
mailing-list, third-party-advisory
-
seclists.org
/bugtraq/2020/Jan/31
mailing-list, third-party-advisory
Sources
- CVE List CVE-2019-16239
- NVD CVE-2019-16239
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.