RHSA-2022:2031

Vulnerability from csaf_opensuse - Published: 2022-05-10 00:00 - Updated: 2026-09-20 11:20
Summary
security update for libssh
Severity
Low
Notes
Title of the patch: security update for libssh
Description of the patch: This security update provides a functional equivalent of RHSA-2022:2031. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2022:2031.
Patchnames: RHSA-2022:2031
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Liberty Linux 8:libssh-0:0.9.6-3.el8.i686 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libssh-0:0.9.6-3.el8.x86_64 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libssh-config-0:0.9.6-3.el8.noarch —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libssh-devel-0:0.9.6-3.el8.i686 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libssh-devel-0:0.9.6-3.el8.x86_64 —
Vendor Fix
Threats
Impact low

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      ],
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          "text": "A flaw has been found in libssh in versions prior to 0.9.6. The SSH protocol keeps track of two shared secrets during the lifetime of the session. One of them is called secret_hash and the other session_id. Initially, both of them are the same, but after key re-exchange, previous session_id is kept and used as an input to new secret_hash. Historically, both of these buffers had shared length variable, which worked as long as these buffers were same. But the key re-exchange operation can also change the key exchange method, which can be based on hash of different size, eventually creating \"secret_hash\" of different size than the session_id has. This becomes an issue when the session_id memory is zeroed or when it is used again during second key re-exchange.",
          "title": "CVE description"
        }
      ],
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          "url": "https://bugzilla.suse.com/1189608"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1194948 for CVE-2021-3634",
          "url": "https://bugzilla.suse.com/1194948"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
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        {
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
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      ],
      "threats": [
        {
          "category": "impact",
          "date": "2022-05-10T00:00:00Z",
          "details": "low"
        }
      ],
      "title": "CVE-2021-3634"
    }
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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