CVE-2023-25565

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, an incorrect free when decoding target information can trigger a denial of service. The error condition incorrectly assumes the cb and sh buffers contain a copy of the data that needs to be freed. However, that is not the case. This vulnerability can be triggered via the main gss_accept_sec_context entry point. This will likely trigger an assertion failure in free, causing a denial-of-service. This issue is fixed in version 1.2.0.

References

Affected packages

Git / github.com/gssapi/gss-ntlmssp

Affected ranges

Type: GIT
Repo: https://github.com/gssapi/gss-ntlmssp
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

3c3077e2a24b47db1b4c459fb3173ba7f75b9b44

Fixed

c16100f60907a2de92bcb676f303b81facee0f64

Affected versions

0.*

0.8.0

v0.*

v0.1.0

v0.2.0

v0.3.0

v0.3.1

v0.4.0

v0.5.0

v0.6.0

v0.7.0

v0.8.0

v0.9.0

v1.*

v1.0.0

v1.1.0

Database specific

{
    "vanir_signatures": [
        {
            "id": "CVE-2023-25565-acd0ce6d",
            "signature_type": "Function",
            "target": {
                "file": "src/ntlm.c",
                "function": "ntlm_decode_target_info"
            },
            "digest": {
                "function_hash": "57595160462499231153569960669104736734",
                "length": 2656.0
            },
            "deprecated": false,
            "signature_version": "v1",
            "source": "https://github.com/gssapi/gss-ntlmssp/commit/c16100f60907a2de92bcb676f303b81facee0f64"
        },
        {
            "id": "CVE-2023-25565-da305334",
            "signature_type": "Line",
            "target": {
                "file": "src/ntlm.c"
            },
            "digest": {
                "line_hashes": [
                    "64777609298809064002460594937770732006",
                    "146692340936863203257691673171394704048",
                    "174878446513571599842790967051535304059",
                    "96459211810076347250371749130271698417",
                    "221266557796664850863809294612000062182"
                ],
                "threshold": 0.9
            },
            "deprecated": false,
            "signature_version": "v1",
            "source": "https://github.com/gssapi/gss-ntlmssp/commit/c16100f60907a2de92bcb676f303b81facee0f64"
        }
    ]
}