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Vulnerability details: VCID-g6gh-16kb-dkdm
Vulnerability ID VCID-g6gh-16kb-dkdm
Aliases CVE-2023-1667
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-476 NULL Pointer Dereference
System Score Found at
cvssv3 4.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-1667.json
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01061 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.0109 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.0109 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.0109 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.0109 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.0109 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
epss 0.01151 https://api.first.org/data/v1/epss?cve=CVE-2023-1667
cvssv3.1 4.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2023-1667
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-1667.json
https://access.redhat.com/security/cve/CVE-2023-1667
https://api.first.org/data/v1/epss?cve=CVE-2023-1667
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.debian.org/debian-lts-announce/2023/05/msg00029.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/
https://security.gentoo.org/glsa/202312-05
http://www.libssh.org/security/advisories/CVE-2023-1667.txt
1035832 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1035832
2182199 https://bugzilla.redhat.com/show_bug.cgi?id=2182199
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:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
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-2023-1667 https://nvd.nist.gov/vuln/detail/CVE-2023-1667
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:L/PR:L/UI:N/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-1667.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:L/PR:L/UI:N/S:U/C:N/I:N/A:L 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:L/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2023-1667
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 0.76725
EPSS Score 0.01061
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:40:39.300906+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/6138-1/ 37.0.0