{
  "threat_severity" : "Moderate",
  "public_date" : "2023-02-14T00:00:00Z",
  "bugzilla" : {
    "description" : "gssntlmssp: memory corruption when decoding UTF16 strings",
    "id" : "2172020",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2172020"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-787",
  "details" : [ "GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, memory corruption can be triggered when decoding UTF16 strings. The variable `outlen` was not initialized and could cause writing a zero to an arbitrary place in memory if `ntlm_str_convert()` were to fail, which would leave `outlen` uninitialized. This can lead to a denial of service if the write hits unmapped memory or randomly corrupts a byte in the application memory space. This vulnerability can trigger an out-of-bounds write, leading to memory corruption. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This issue is fixed in version 1.2.0.", "A flaw was found in GSS-NTLMSSP, a mechglue plugin for the GSSAPI library that implements NTLM authentication. Memory corruption can be triggered when decoding UTF16 strings. The variable `outlen` was not initialized and could cause writing a zero to an arbitrary place in memory if the `ntlm_str_convert()` fails, which would leave `outlen` uninitialized. This issue can lead to a denial of service if the write hits unmapped memory or randomly corrupts a byte in the application memory space. This vulnerability can trigger an out-of-bounds write, leading to memory corruption, and can be triggered via the main `gss_accept_sec_context` entry point." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2023-05-16T00:00:00Z",
    "advisory" : "RHSA-2023:3097",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "gssntlmssp-0:1.2.0-1.el8_8"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-25564\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-25564\nhttps://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-r85x-q5px-9xfq" ],
  "name" : "CVE-2023-25564",
  "csaw" : false
}