CVE-2019-16239
process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.
02 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.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 3.44% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 88.9% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2019-09-17 11:37Z7 YR AGO
- Last updated
- 2024-08-05 01:10Z2 YR AGO
- Reserved
- 2019-09-11
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
- Data version
- 5.1
- Document digest
- f06f6a303da868de09fb18c5a438a6f27e444f96c7e8b751d4dc67ded2c17eda
05 Affected products
06 References
- t2.fihttps://t2.fi/schedule/2019/
- lists.fedoraproject.orgFEDORA-2019-6969467639https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WI7ZENFAWCHF2RU4NHPL2CU4WGZ4BNDJ/
- lists.infradead.orghttp://lists.infradead.org/pipermail/openconnect-devel/2019-September/005412.html
- lists.fedoraproject.orgFEDORA-2019-1caffa01f2https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HDMZGNBLZZKAGBI2PNXYWWKLD2LXKFH6/
- lists.fedoraproject.orgFEDORA-2019-4c0d6e1784https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FX56KYWC7X4ETV4P6HGJC7GZUEBITBBS/
- lists.debian.org[debian-lts-announce] 20191004 [SECURITY] [DLA 1945-1] openconnect security updatehttps://lists.debian.org/debian-lts-announce/2019/10/msg00003.html
- lists.opensuse.orgopenSUSE-SU-2019:2385http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00060.html
- lists.opensuse.orgopenSUSE-SU-2019:2388http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00061.html
- www.debian.orgDSA-4607https://www.debian.org/security/2020/dsa-4607
- seclists.org20200120 [SECURITY] [DSA 4607-1] openconnect security updatehttps://seclists.org/bugtraq/2020/Jan/31
- usn.ubuntu.comUSN-4565-1https://usn.ubuntu.com/4565-1/
07 Fixed in
Debian 12
- openconnect Fixed in 8.02-1.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- openconnect Fixed in 8.02-1.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- openconnect Fixed in 8.02-1.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- openconnect Fixed in 7.08-3ubuntu0.18.04.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.