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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:261525
Version
1
Class
vulnerability
ALTXid
494701
Language
Russian
Severity
High
Title
Sber -- уязвимость в gssntlmssp (CVE-2023-25564)
Description
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.
Family
unix
Platform
SberLinux 8
Product
gssntlmssp
Reference
CVE: CVE-2023-25564
CVE: CVE-2023-25564
Id:
CVE-2023-25564
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25564
Comment
: 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.
CVSSv3 Score:
8.2
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
LOW
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CWE:
787 (Out-of-bounds Write)
References:
https://github.com/gssapi/gss-ntlmssp/commit/c753000eb31835c0664e528fbc99378ae0cbe950 (MISC)
https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0 (MISC)
https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-r85x-q5px-9xfq (MISC)
VENDOR: RHSA-2023:3097
VENDOR: RHSA-2023:3097
Id:
RHSA-2023:3097
Reference:
https://access.redhat.com/errata/RHSA-2023:3097
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