CVE-2025-5987— Libssh: invalid return code for chacha20 poly1305 with openssl backend
Quick assessment
Affected
CVE-2025-5987
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
libssh是libssh组织的一个用于访问SSH服务的C语言开发包，它能够执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。 libssh存在安全漏洞，该漏洞源于使用ChaCha20密码时未检测堆空间耗尽错误，可能导致数据机密性和完整性受损。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 20
I. Basic Information for CVE-2025-5987
Vulnerability Information
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Vulnerability Title
Libssh: invalid return code for chacha20 poly1305 with openssl backend
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
返回错误的状态编码
Source: CVE Program / CVE List V5
Vulnerability Title
libssh 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libssh是libssh组织的一个用于访问SSH服务的C语言开发包，它能够执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。 libssh存在安全漏洞，该漏洞源于使用ChaCha20密码时未检测堆空间耗尽错误，可能导致数据机密性和完整性受损。
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 |
|---|---|---|---|---|
| - | - | 0.10.0 ~ 0.11.2 | - |
|
| Red Hat | Red Hat Enterprise Linux 10 | 0:0.11.1-5.el10_1 ~ * |
cpe:/o:redhat:enterprise_linux:10.1
|
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | 0:0.11.1-4.el10_0.1 ~ * |
cpe:/o:redhat:enterprise_linux_eus:10.0
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:0.10.4-17.el9_7 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:0.10.4-17.el9_7 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | 0:0.10.4-9.el9_2.2 ~ * |
cpe:/a:redhat:rhel_e4s:9.2::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | 0:0.10.4-13.el9_4.2 ~ * |
cpe:/a:redhat:rhel_eus:9.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | 0:0.10.4-15.el9_6.1 ~ * |
cpe:/a:redhat:rhel_eus:9.6::appstream
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.13 | 413.92.202602240113-0 ~ * |
cpe:/a:redhat:openshift:4.13::el9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.14 | 414.92.202601191325-0 ~ * |
cpe:/a:redhat:openshift:4.14::el9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.15 | 415.92.202601271320-0 ~ * |
cpe:/a:redhat:openshift:4.15::el9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.16 | 416.94.202601160124-0 ~ * |
cpe:/a:redhat:openshift:4.16::el9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.17 | 417.94.202601120213-0 ~ * |
cpe:/a:redhat:openshift:4.17::el9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.18 | 418.94.202601202224-0 ~ * |
cpe:/a:redhat:openshift:4.18::el9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.19 | 4.19.9.6.202601260820-0 ~ * |
cpe:/a:redhat:openshift:4.19::el9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.20 | 4.20.9.6.202601211057-0 ~ * |
cpe:/a:redhat:openshift:4.20::el9
|
|
| Red Hat | Red Hat Enterprise Linux 6 | - |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 | - |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 | - |
cpe:/a:redhat:openshift:4
|
|
II. Public POCs for CVE-2025-5987
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2025-5987 (11)
IV. Related Vulnerabilities
V. Comments for CVE-2025-5987
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