CVE-2019-16905 — Integer Overflow or Wraparound in Openssh

CWE-190 — Integer Overflow or Wraparound11 documents9 sources
Severity
7.8HIGHNVD
EPSS
0.3%
top 49.38%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Openbsd OpensshSiemens Scalance X204rna ECC FirmwareSiemens Scalance X204rna Firmware+1 more
Timeline
PublishedOct 9
Latest updateFeb 14

Description

OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages5 packages

▶NVDopenbsd/openssh8.0 — 8.1+1
▶Debianopenbsd/openssh< 1:8.1p1-1+3
▶Palo Altopaloalto/pan-os

Patches

Patch: cvsweb.openbsd.org ↗Patch: cvsweb.openbsd.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-qw5m-v83j-4g26: OpenSSH 7↗2022-05-24
▶
OSV
CVE-2019-16905: OpenSSH 7↗2019-10-09
▶
CVEList
CVE-2019-16905: OpenSSH 7↗2019-10-09
▶

📋Vendor Advisories

4
Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS↗2024-02-14
▶
Microsoft
OpenSSH 7.7 through 7.9 and 8.x before 8.1 when compiled with an experimental key type has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This lea↗2019-10-08
▶
Red Hat
openssh: an integer overflow in the private key parsing code for the XMSS key type↗2019-08-28
▶
Debian
CVE-2019-16905: openssh - OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental k...↗2019
▶

💬Community

3
Bugzilla
CVE-2019-16905 openssh: an integer overflow in the private key parsing code for the XMSS key type↗2019-11-01
▶
Bugzilla
CVE-2019-16905 openssh: an integer overflow in the private key parsing code for the XMSS key type [fedora-30]↗2019-11-01
▶
Bugzilla
CVE-2019-16905 openssh: an integer overflow in the private key parsing code for the XMSS key type [fedora-29]↗2019-11-01
▶
CVE-2019-16905 — Integer Overflow or Wraparound | cvebase