RedHat: RHSA-2023-3839:01 Moderate: libssh security update
Summary
libssh is a library which implements the SSH protocol. It can be used to
implement client and server applications.
Security Fix(es):
* libssh: NULL pointer dereference during rekeying with algorithm guessing
(CVE-2023-1667)
* libssh: authorization bypass in pki_verify_data_signature (CVE-2023-2283)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Summary
Solution
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing these updated packages, all running applications using
libssh must be restarted for this update to take effect.
References
https://access.redhat.com/security/cve/CVE-2023-1667 https://access.redhat.com/security/cve/CVE-2023-2283 https://access.redhat.com/security/updates/classification/#moderate
Package List
Red Hat Enterprise Linux AppStream (v. 8):
aarch64:
libssh-debuginfo-0.9.6-10.el8_8.aarch64.rpm
libssh-debugsource-0.9.6-10.el8_8.aarch64.rpm
libssh-devel-0.9.6-10.el8_8.aarch64.rpm
ppc64le:
libssh-debuginfo-0.9.6-10.el8_8.ppc64le.rpm
libssh-debugsource-0.9.6-10.el8_8.ppc64le.rpm
libssh-devel-0.9.6-10.el8_8.ppc64le.rpm
s390x:
libssh-debuginfo-0.9.6-10.el8_8.s390x.rpm
libssh-debugsource-0.9.6-10.el8_8.s390x.rpm
libssh-devel-0.9.6-10.el8_8.s390x.rpm
x86_64:
libssh-debuginfo-0.9.6-10.el8_8.i686.rpm
libssh-debuginfo-0.9.6-10.el8_8.x86_64.rpm
libssh-debugsource-0.9.6-10.el8_8.i686.rpm
libssh-debugsource-0.9.6-10.el8_8.x86_64.rpm
libssh-devel-0.9.6-10.el8_8.i686.rpm
libssh-devel-0.9.6-10.el8_8.x86_64.rpm
Red Hat Enterprise Linux BaseOS (v. 8):
Source:
libssh-0.9.6-10.el8_8.src.rpm
aarch64:
libssh-0.9.6-10.el8_8.aarch64.rpm
libssh-debuginfo-0.9.6-10.el8_8.aarch64.rpm
libssh-debugsource-0.9.6-10.el8_8.aarch64.rpm
noarch:
libssh-config-0.9.6-10.el8_8.noarch.rpm
ppc64le:
libssh-0.9.6-10.el8_8.ppc64le.rpm
libssh-debuginfo-0.9.6-10.el8_8.ppc64le.rpm
libssh-debugsource-0.9.6-10.el8_8.ppc64le.rpm
s390x:
libssh-0.9.6-10.el8_8.s390x.rpm
libssh-debuginfo-0.9.6-10.el8_8.s390x.rpm
libssh-debugsource-0.9.6-10.el8_8.s390x.rpm
x86_64:
libssh-0.9.6-10.el8_8.i686.rpm
libssh-0.9.6-10.el8_8.x86_64.rpm
libssh-debuginfo-0.9.6-10.el8_8.i686.rpm
libssh-debuginfo-0.9.6-10.el8_8.x86_64.rpm
libssh-debugsource-0.9.6-10.el8_8.i686.rpm
libssh-debugsource-0.9.6-10.el8_8.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
![Dist Redhat](/images/distros/dist-redhat.png)
Topic
An update for libssh is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64
Bugs Fixed
2182199 - CVE-2023-1667 libssh: NULL pointer dereference during rekeying with algorithm guessing
2189736 - CVE-2023-2283 libssh: authorization bypass in pki_verify_data_signature