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CVE-2025-59088— Python-kdcproxy: unauthenticated ssrf via realm‑controlled dns srv

Quick assessment

Affected
latchset kdcproxy
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

kdcproxy是latchset开源的一个Python库 kdcproxy存在安全漏洞，该漏洞源于默认查询DNS SRV记录，可能导致服务器端请求伪造攻击。

CVSS 8.6 · High EPSS 0.49% · P41

Affected Version Matrix 19

VendorProduct Version RangeStatus
latchset kdcproxy < 1.1.0 affected
Red Hat Red Hat Enterprise Linux 10 0:1.0.0-19.el10_1< * unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.0.0-19.el10_0< * unaffected
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:0.3.2-3.el7_9.3< * unaffected
Red Hat Red Hat Enterprise Linux 8 8100020251103113748.143e9e98< * unaffected
8100020251028161822.823393f5< * unaffected
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 8020020251106022345.792f4060< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 8040020251103205102.5b01ab7e< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 8040020251103205102.5b01ab7e< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 8060020251030180424.ada582f1< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 8060020251030180424.ada582f1< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 8060020251030180424.ada582f1< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 8080020251029082621.b0a6ceea< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 8080020251029082621.b0a6ceea< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:1.0.0-9.el9_7< * unaffected
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:1.0.0-7.el9_0.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.0.0-7.el9_2.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:1.0.0-7.el9_4.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.0.0-9.el9_6< * unaffected
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I. Basic Information for CVE-2025-59088

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Python-kdcproxy: unauthenticated ssrf via realm‑controlled dns srv
Source: CVE Program / CVE List V5
Vulnerability Description
If kdcproxy receives a request for a realm which does not have server addresses defined in its configuration, by default, it will query SRV records in the DNS zone matching the requested realm name. This creates a server-side request forgery vulnerability, since an attacker could send a request for a realm matching a DNS zone where they created SRV records pointing to arbitrary ports and hostnames (which may resolve to loopback or internal IP addresses). This vulnerability can be exploited to probe internal network topology and firewall rules, perform port scanning, and exfiltrate data. Deployments where the "use_dns" setting is explicitly set to false are not affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
kdcproxy 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
kdcproxy是latchset开源的一个Python库 kdcproxy存在安全漏洞，该漏洞源于默认查询DNS SRV记录，可能导致服务器端请求伪造攻击。
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
latchset kdcproxy 0 ~ 1.1.0 -
Red Hat Red Hat Enterprise Linux 10 0:1.0.0-19.el10_1 ~ * cpe:/o:redhat:enterprise_linux:10.1
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.0.0-19.el10_0 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:0.3.2-3.el7_9.3 ~ * cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 8 8100020251103113748.143e9e98 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 8100020251028161822.823393f5 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 8020020251106022345.792f4060 ~ * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 8040020251103205102.5b01ab7e ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 8040020251103205102.5b01ab7e ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 8060020251030180424.ada582f1 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 8060020251030180424.ada582f1 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 8060020251030180424.ada582f1 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 8080020251029082621.b0a6ceea ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 8080020251029082621.b0a6ceea ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 9 0:1.0.0-9.el9_7 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:1.0.0-7.el9_0.1 ~ * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.0.0-7.el9_2.1 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:1.0.0-7.el9_4.1 ~ * cpe:/a:redhat:rhel_eus:9.4::appstream
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.0.0-9.el9_6 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream

II. Public POCs for CVE-2025-59088

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7942 chars
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III. Intelligence Information for CVE-2025-59088

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Vendor Advisories for CVE-2025-59088 (12)

IV. Related Vulnerabilities

Same product: kdcproxy
Same vendor: latchset
Same weakness: CWE-918

V. Comments for CVE-2025-59088

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