USN-5936-1

Source
https://ubuntu.com/security/notices/USN-5936-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/USN-5936-1.json
Related
Published
2023-03-08T13:02:34.372129Z
Modified
2023-03-08T13:02:34.372129Z
Summary
samba vulnerabilities
Details

Evgeny Legerov discovered that Samba incorrectly handled buffers in certain GSSAPI routines of Heimdal. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2022-3437)

Tom Tervoort discovered that Samba incorrectly used weak rc4-hmac Kerberos keys. A remote attacker could possibly use this issue to elevate privileges. (CVE-2022-37966, CVE-2022-37967)

It was discovered that Samba supported weak RC4/HMAC-MD5 in NetLogon Secure Channel. A remote attacker could possibly use this issue to elevate privileges. (CVE-2022-38023)

Greg Hudson discovered that Samba incorrectly handled PAC parsing. On 32-bit systems, a remote attacker could use this issue to escalate privileges, or possibly execute arbitrary code. (CVE-2022-42898)

Joseph Sutton discovered that Samba could be forced to issue rc4-hmac encrypted Kerberos tickets. A remote attacker could possibly use this issue to escalate privileges. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-45141)

WARNING: This update upgrades the version of Samba to 4.15.13. Please see the upstream release notes for important changes in the new version:

https://www.samba.org/samba/history/samba-4.15.0.html

In addition, the security fixes included in this new version introduce several important behavior changes which may cause compatibility problems interacting with systems still expecting the former behavior. Please see the following upstream advisories for more information:

https://www.samba.org/samba/security/CVE-2022-37966.html https://www.samba.org/samba/security/CVE-2022-37967.html https://www.samba.org/samba/security/CVE-2022-38023.html

References

Affected packages

Ubuntu:20.04:LTS / samba

Package

Name
samba

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0The exact introduced commit is unknown
Fixed
2:4.15.13+dfsg-0ubuntu0.20.04.1

Ecosystem specific 

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "libwbclient-dev": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "samba-libs": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "registry-tools": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "samba-common-bin": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "python3-samba": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "samba-dsdb-modules": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "ctdb": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "libnss-winbind": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "samba-vfs-modules": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "winbind": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "samba-common": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "libpam-winbind": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "smbclient": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "samba-testsuite": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "samba-dev": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "libsmbclient": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "samba": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "libwbclient0": "2:4.15.13+dfsg-0ubuntu0.20.04.1",
            "libsmbclient-dev": "2:4.15.13+dfsg-0ubuntu0.20.04.1"
        }
    ]
}