286 lines
12 KiB
JSON
286 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveId": "CVE-2026-0967",
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"state": "PUBLISHED",
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"dateReserved": "2026-01-14T21:55:01.348Z",
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"datePublished": "2026-03-26T20:06:30.707Z",
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"dateUpdated": "2026-11-06T17:49:06.838Z"
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},
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"containers": {
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"cna": {
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"title": "Libssh: libssh: denial of service via inefficient regular expression processing",
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"metrics": [
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{
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"other": {
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"content": {
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"value": "Low",
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"namespace": "https://access.redhat.com/security/updates/classification/"
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},
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"type": "Red Hat severity rating"
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}
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},
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{
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"cvssV3_0": {
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"attackComplexity": "HIGH",
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"attackVector": "LOCAL",
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"availabilityImpact": "LOW",
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"baseScore": 2.2,
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"baseSeverity": "LOW",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L",
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client."
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}
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],
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"affected": [
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 10",
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"packageName": "libssh",
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"product": "Red Hat Enterprise Linux 9",
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"packageName": "libssh",
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{
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"version": "0:0.10.4-18.el9",
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"vendor": "Red Hat",
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"packageName": "libssh",
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{
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"version": "0:0.10.4-18.el9",
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"lessThan": "*",
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"status": "unaffected"
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{
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"product": "Red Hat Enterprise Linux 6",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "libssh2",
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"defaultStatus": "unaffected",
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"cpe:/o:redhat:rhel_els:6"
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 7",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "libssh2",
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"defaultStatus": "unaffected",
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"cpes": [
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"cpe:/o:redhat:rhel_els:7"
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 8",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "libssh",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:enterprise_linux:8"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat Hardened Images",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "libssh2",
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"defaultStatus": "unaffected",
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"cpes": [
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"cpe:/a:redhat:hummingbird:1"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenShift Container Platform 4",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openshift/ose-rhel-coreos-8",
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"defaultStatus": "affected",
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"cpe:/a:redhat:openshift:4"
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{
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"product": "Red Hat OpenShift Container Platform 4",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openshift/ose-rhel-coreos-9",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openshift:4"
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]
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}
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],
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"references": [
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:18160",
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"name": "RHSA-2026:18160",
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"tags": [
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"vendor-advisory",
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"x_refsource_REDHAT"
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]
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},
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:18683",
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"name": "RHSA-2026:18683",
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"tags": [
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"vendor-advisory",
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]
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{
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"url": "https://access.redhat.com/security/cve/CVE-2026-0967",
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]
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},
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{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2436981",
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"name": "RHBZ#2436981",
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"tags": [
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"issue-tracking",
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"x_refsource_REDHAT"
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]
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},
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{
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"url": "https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/"
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}
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],
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"datePublic": "2026-02-10T18:47:09.215Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-1333",
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"description": "Inefficient Regular Expression Complexity",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"x_redhatCweChain": "CWE-1333: Inefficient Regular Expression Complexity",
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"workarounds": [
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{
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"lang": "en",
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"value": "Avoid using complex patterns in configuration files and known_hosts."
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}
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],
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"timeline": [
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{
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"lang": "en",
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"time": "2026-02-04T23:43:23.869Z",
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"value": "Reported to Red Hat."
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},
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{
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"lang": "en",
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"time": "2026-02-10T18:47:09.215Z",
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"value": "Made public."
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Red Hat would like to thank Jakub Jelen (libssh) and Kang Yang for reporting this issue."
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}
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],
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"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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},
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"adp": [
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{
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"content": {
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"timestamp": "2026-03-27T13:36:27.743421Z",
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"id": "CVE-2026-0967",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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]
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}
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} |