CVE-2023-25566— GSS-NTLMSSP vulnerable to memory leak when parsing usernames
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I. Basic Information for CVE-2023-25566
Vulnerability Information
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Vulnerability Title
GSS-NTLMSSP vulnerable to memory leak when parsing usernames
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: NVD (National Vulnerability Database)
Vulnerability Title
GSS-NTLMSSP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GSS-NTLMSSP是gssapi开源的一个实现 NTLM 身份验证的 GSSAPI 库的 mechglue 插件。 GSS-NTLMSSP 1.2.0之前版本存在安全漏洞，该漏洞源于解析用户名时可能会触发内存泄漏，从而触发拒绝服务，攻击者可以通过“gss_accept_sec_context”主入口点触发该漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| gssapi | gss-ntlmssp | < 1.2.0 | - |
II. Public POCs for CVE-2023-25566
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2023-25566
Same Patch Batch · gssapi · 2023-02-14 · 5 CVEs total
| CVE-2023-25565 | 7.5 HIGH | GSS-NTLMSSP vulnerable to incorrect free when decoding target information |
| CVE-2023-25567 | 7.5 HIGH | GSS-NTLMSSP vulnerable to out-of-bounds read when decoding target information |
| CVE-2023-25564 | 6.5 MEDIUM | GSS-NTLMSSP vulnerable to memory corruption when decoding UTF16 strings |
| CVE-2023-25563 | 5.9 MEDIUM | GSS-NTLMSSP vulnerable to multiple out-of-bounds reads when decoding NTLM fields |
IV. Related Vulnerabilities
Same product: gss-ntlmssp
Same vendor: gssapi
Same weakness: CWE-401
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