An update for libssh is now available for openEuler-20.03-LTS-SP3 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2023-1306 Final 1.0 1.0 2023-06-03 Initial 2023-06-03 2023-06-03 openEuler SA Tool V1.0 2023-06-03 libssh security update An update for libssh is now available for openEuler-20.03-LTS-SP3. 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-20.03-LTS-SP3. 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-2023-1306 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-20.03-LTS-SP3 libssh-0.9.4-8.oe1.aarch64.rpm libssh-debugsource-0.9.4-8.oe1.aarch64.rpm libssh-devel-0.9.4-8.oe1.aarch64.rpm libssh-debuginfo-0.9.4-8.oe1.aarch64.rpm libssh-help-0.9.4-8.oe1.noarch.rpm libssh-0.9.4-8.oe1.src.rpm libssh-debuginfo-0.9.4-8.oe1.x86_64.rpm libssh-debugsource-0.9.4-8.oe1.x86_64.rpm libssh-0.9.4-8.oe1.x86_64.rpm libssh-devel-0.9.4-8.oe1.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. 2023-06-03 CVE-2023-1667 openEuler-20.03-LTS-SP3 Medium 4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L libssh security update 2023-06-03 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1306 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. 2023-06-03 CVE-2023-2283 openEuler-20.03-LTS-SP3 Medium 4.2 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N libssh security update 2023-06-03 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1306