An update for libssh is now available for openEuler-22.03-LTS
Security Advisory
openeuler-security@openeuler.org
openEuler security committee
openEuler-SA-2023-1291
Final
1.0
1.0
2023-05-26
Initial
2023-05-26
2023-05-26
openEuler SA Tool V1.0
2023-05-26
libssh security update
An update for libssh is now available for openEuler-22.03-LTS.
The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote programs. With its Secure FTP implementation, you can play with remote files easily, without third-party programs others than libcrypto (from openssl).
Security Fix(es):
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.(CVE-2023-1667)
A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.(CVE-2023-2283)
An update for libssh is now available for openEuler-22.03-LTS.
openEuler Security has rated this update as having a security impact of medium. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.
Medium
libssh
https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1291
https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-1667
https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-2283
https://nvd.nist.gov/vuln/detail/CVE-2023-1667
https://nvd.nist.gov/vuln/detail/CVE-2023-2283
openEuler-22.03-LTS
libssh-0.9.6-7.oe2203.aarch64.rpm
libssh-debugsource-0.9.6-7.oe2203.aarch64.rpm
libssh-debuginfo-0.9.6-7.oe2203.aarch64.rpm
libssh-devel-0.9.6-7.oe2203.aarch64.rpm
libssh-help-0.9.6-7.oe2203.noarch.rpm
libssh-0.9.6-7.oe2203.src.rpm
libssh-devel-0.9.6-7.oe2203.x86_64.rpm
libssh-debugsource-0.9.6-7.oe2203.x86_64.rpm
libssh-debuginfo-0.9.6-7.oe2203.x86_64.rpm
libssh-0.9.6-7.oe2203.x86_64.rpm
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.
2023-05-26
CVE-2023-1667
openEuler-22.03-LTS
Medium
4.3
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
libssh security update
2023-05-26
https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1291
A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.
2023-05-26
CVE-2023-2283
openEuler-22.03-LTS
Medium
4.2
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
libssh security update
2023-05-26
https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1291