CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2023-25567 – GSS-NTLMSSP vulnerable to out-of-bounds read when decoding target information
https://notcve.org/view.php?id=CVE-2023-25567
GSS-NTLMSSP, a mechglue plugin for the GSSAPI library that implements NTLM authentication, has an out-of-bounds read when decoding target information prior to version 1.2.0. The length of the `av_pair` is not checked properly for two of the elements which can trigger an out-of-bound read. The out-of-bounds read can be triggered via the main `gss_accept_sec_context` entry point and could cause a denial-of-service if the memory is unmapped. The 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. • https://github.com/gssapi/gss-ntlmssp/commit/025fbb756d44ffee8f847db4222ed6aa4bd1fbe4 https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0 https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-24pf-6prf-24ch https://access.redhat.com/security/cve/CVE-2023-25567 https://bugzilla.redhat.com/show_bug.cgi?id=2172023 • CWE-125: Out-of-bounds Read •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2023-25566 – GSS-NTLMSSP vulnerable to memory leak when parsing usernames
https://notcve.org/view.php?id=CVE-2023-25566
GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, a memory leak can be triggered when parsing usernames which can trigger a denial-of-service. The domain portion of a username may be overridden causing an allocated memory area the size of the domain name to be leaked. An attacker can leak memory via the main `gss_accept_sec_context` entry point, potentially causing a denial-of-service. This issue is fixed in version 1.2.0. • https://github.com/gssapi/gss-ntlmssp/commit/8660fb16474054e692a596e9c79670cd4d3954f4 https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0 https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-mfm4-6g58-jw74 https://access.redhat.com/security/cve/CVE-2023-25566 https://bugzilla.redhat.com/show_bug.cgi?id=2172022 • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2023-25565 – GSS-NTLMSSP vulnerable to incorrect free when decoding target information
https://notcve.org/view.php?id=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. • https://github.com/gssapi/gss-ntlmssp/commit/c16100f60907a2de92bcb676f303b81facee0f64 https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0 https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-7q7f-wqcg-mvfg https://access.redhat.com/security/cve/CVE-2023-25565 https://bugzilla.redhat.com/show_bug.cgi?id=2172021 • CWE-590: Free of Memory not on the Heap CWE-763: Release of Invalid Pointer or Reference •
CVSS: 8.2EPSS: 0%CPEs: 1EXPL: 0CVE-2023-25564 – GSS-NTLMSSP vulnerable to memory corruption when decoding UTF16 strings
https://notcve.org/view.php?id=CVE-2023-25564
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. • https://github.com/gssapi/gss-ntlmssp/commit/c753000eb31835c0664e528fbc99378ae0cbe950 https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0 https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-r85x-q5px-9xfq https://access.redhat.com/security/cve/CVE-2023-25564 https://bugzilla.redhat.com/show_bug.cgi?id=2172020 • CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2023-25563 – GSS-NTLMSSP vulnerable to multiple out-of-bounds reads when decoding NTLM fields
https://notcve.org/view.php?id=CVE-2023-25563
GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, multiple out-of-bounds reads when decoding NTLM fields can trigger a denial of service. A 32-bit integer overflow condition can lead to incorrect checks of consistency of length of internal buffers. Although most applications will error out before accepting a singe input buffer of 4GB in length this could theoretically happen. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point if the application allows tokens greater than 4GB in length. • https://github.com/gssapi/gss-ntlmssp/commit/97c62c6167299028d80765080e74d91dfc99efbd https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0 https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-jjjx-5qf7-9mgf https://access.redhat.com/security/cve/CVE-2023-25563 https://bugzilla.redhat.com/show_bug.cgi?id=2172019 • CWE-125: Out-of-bounds Read •