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Debian Security Advisory 5409-1

Debian Linux Security Advisory 5409-1 - Two security issues have been discovered in libssh, a tiny C SSH library.

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#linux#debian#dos#js#auth#ssh

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Debian Security Advisory DSA-5409-1 [email protected]
https://www.debian.org/security/ Moritz Muehlenhoff
May 23, 2023 https://www.debian.org/security/faq


Package : libssh
CVE ID : CVE-2023-1667 CVE-2023-2283
Debian Bug : 1035832

Two security issues have been discovered in libssh, a tiny C SSH library:

CVE-2023-1667

Philip Turnbull discovered a NULL pointer dereference which could  
result in denial of service.

CVE-2023-2283

Kevin Backhouse discovered that pki_verify_data_signature() may  
fail to correctly validate authentication in memory pressure  
situations.

For the stable distribution (bullseye), these problems have been fixed in
version 0.9.7-0+deb11u1.

We recommend that you upgrade your libssh packages.

For the detailed security status of libssh please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libssh

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]
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CVE-2023-1667: Invalid Bug ID

A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may allow an authenticated client to cause a denial of service.

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