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Vulnerability details: VCID-kf5v-25ak-17e3
Vulnerability ID VCID-kf5v-25ak-17e3
Aliases CVE-2023-2283
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-287 Improper Authentication
System Score Found at
cvssv3 4.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-2283.json
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
epss 0.0025 https://api.first.org/data/v1/epss?cve=CVE-2023-2283
cvssv3.1 4.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2023-2283
Reference id Reference type URL
http://packetstormsecurity.com/files/172861/libssh-0.9.6-0.10.4-pki_verify_data_signature-Authorization-Bypass.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-2283.json
https://access.redhat.com/security/cve/CVE-2023-2283
https://api.first.org/data/v1/epss?cve=CVE-2023-2283
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1667
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2283
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/
https://security.gentoo.org/glsa/202312-05
https://www.libssh.org/security/advisories/CVE-2023-2283.txt
1035832 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1035832
2189736 https://bugzilla.redhat.com/show_bug.cgi?id=2189736
cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
CVE-2023-2283 https://nvd.nist.gov/vuln/detail/CVE-2023-2283
RHSA-2023:3839 https://access.redhat.com/errata/RHSA-2023:3839
RHSA-2023:6643 https://access.redhat.com/errata/RHSA-2023:6643
RHSA-2024:0538 https://access.redhat.com/errata/RHSA-2024:0538
USN-6138-1 https://usn.ubuntu.com/6138-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-2283.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-2283
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.48337
EPSS Score 0.0025
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:40:39.320873+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/6138-1/ 37.0.0