Improper validation of certificate with host mismatch in cURL - CVE-2025-15079

Vulnerability identifier: #VU121029

CSH Severity: Low

CVSS v4 BT: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-15079

CWE-ID: CWE-297

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists during SSH-based transfers due to the library mistakenly accepts connections to hosts not present in the specified file if they were added as recognized in the libssh global knownhosts file. A remote attacker can perform a MitM attack.

Note, the vulnerability affects libcurl builds that use libssh backend instead of libssh2. 

cURL
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
Ubuntu
Basesystem Module
openSUSE Leap
openEuler
Anolis OS
SecurityCenter
Nessus Network Monitor
LANTIME Operating System Firmware (LTOS)
curl (Ubuntu package)
libcurl-devel
curl-help
libcurl
curl-debugsource
curl-debuginfo
curl
libcurl4-debuginfo
libcurl4-debuginfo-32bit
libcurl4-32bit
libcurl4
curl-doc
libcurl-minimal
curl-minimal
libcurl-mini4
curl-mini-debugsource
libcurl-mini4-debuginfo
curl-zsh-completion
curl-fish-completion
libcurl-devel-doc
libcurl-devel-32bit
libcurl4-32bit-debuginfo
libcurl4-64bit-debuginfo
libcurl4-64bit
libcurl-devel-64bit

Install updates from vendor's website.

cURL - update to 8.18.0
SecurityCenter - addressed in versions SC-202602.1, SC-202602.2
Nessus Network Monitor - update to 6.5.3
LANTIME Operating System Firmware (LTOS) - update to 7.10.008
curl (Ubuntu package) - addressed in versions 7.35.0-1ubuntu2.20+esm19, 7.47.0-1ubuntu2.19+esm15, 7.58.0-2ubuntu3.24+esm7, 7.68.0-1ubuntu2.25+esm2, 7.81.0-1ubuntu1.22, 8.5.0-2ubuntu10.7, 8.14.1-2ubuntu1.1
libcurl-devel - addressed in versions 7.71.1-45, 7.79.1-46, 8.4.0-26
curl-help - addressed in versions 7.71.1-45, 7.79.1-46, 8.4.0-26
libcurl - addressed in versions 7.71.1-45, 7.79.1-46, 8.4.0-26
curl-debugsource - addressed in versions 7.71.1-45, 7.79.1-46, 8.4.0-26
curl-debuginfo - addressed in versions 7.71.1-45, 7.79.1-46, 8.4.0-26
curl - addressed in versions 7.71.1-45, 7.79.1-46, 8.4.0-26
curl-debuginfo - addressed in versions 8.0.1-11.111.1, 8.14.1-150200.4.97.1, 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1, 8.14.1-150700.7.8.1
curl - addressed in versions 8.0.1-11.111.1, 8.14.1-150200.4.97.1, 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1, 8.14.1-150700.7.8.1
libcurl4-debuginfo - addressed in versions 8.0.1-11.111.1, 8.14.1-150200.4.97.1, 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1, 8.14.1-150700.7.8.1
curl-debugsource - addressed in versions 8.0.1-11.111.1, 8.14.1-150200.4.97.1, 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1, 8.14.1-150700.7.8.1
libcurl-devel - addressed in versions 8.0.1-11.111.1, 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1, 8.14.1-150700.7.8.1
libcurl4-debuginfo-32bit - update to 8.0.1-11.111.1
libcurl4-32bit - addressed in versions 8.0.1-11.111.1, 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1, 8.14.1-150700.7.8.1
libcurl4 - addressed in versions 8.0.1-11.111.1, 8.14.1-150200.4.97.1, 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1, 8.14.1-150700.7.8.1
curl-doc - update to 8.4.0-13
libcurl-minimal - update to 8.4.0-13
libcurl-devel - update to 8.4.0-13
libcurl - update to 8.4.0-13
curl-minimal - update to 8.4.0-13
curl - update to 8.4.0-13
libcurl-mini4 - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1
curl-mini-debugsource - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1
libcurl-mini4-debuginfo - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1
curl-zsh-completion - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1
curl-fish-completion - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1
libcurl-devel-doc - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1
libcurl-devel-32bit - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1
libcurl4-32bit-debuginfo - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1, 8.14.1-150700.7.8.1
libcurl4-64bit-debuginfo - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1
libcurl4-64bit - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1
libcurl-devel-64bit - addressed in versions 8.14.1-150400.5.77.1, 8.14.1-150600.4.34.1

• https://curl.se/docs/CVE-2025-15079.html

• Multiple vulnerabilities in cURL
• SUSE update for curl
• SUSE update for curl
• SUSE update for curl
• SUSE update for curl
• openEuler 24.03 LTS update for curl
• openEuler 22.03 LTS SP4 update for curl
• openEuler 20.03 LTS SP4 update for curl
• openEuler 24.03 LTS SP3 update for curl
• openEuler 24.03 LTS SP2 update for curl
• openEuler 24.03 LTS SP1 update for curl
• Tenable Network Monitor update for third-party components
• Anolis OS update for curl
• Meinberg LANTIME firmware update for third-party components
• SUSE update for curl
• Multiple vulnerabilities in Tenable Security Center
• Ubuntu update for curl
• Ubuntu update for curl