Libssh: invalid return code for chacha20 poly1305 with openssl backend
CVSS score
8.1
EPSS probability
%1.7
Risk score
0.1
Published
1 y ago
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Impact on My Inventory
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Vulnerability description
DayBreach CVE AI Research
CVE-2025-5987 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
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.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2025-5987 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | redhat | libssh | View |
| 2 | Red Hat | Red Hat Enterprise Linux 10 | View |
| 3 | Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | View |
| 4 | Red Hat | Red Hat Enterprise Linux 9 | View |
| 5 | Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | View |
| 6 | Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | View |
| 7 | Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | View |
| 8 | Red Hat | Red Hat OpenShift Container Platform 4.13 | View |
| 9 | Red Hat | Red Hat OpenShift Container Platform 4.14 | View |
| 10 | Red Hat | Red Hat OpenShift Container Platform 4.15 | View |
| 11 | Red Hat | Red Hat OpenShift Container Platform 4.16 | View |
| 12 | Red Hat | Red Hat OpenShift Container Platform 4.17 | View |
| 13 | Red Hat | Red Hat OpenShift Container Platform 4.18 | View |
| 14 | Red Hat | Red Hat OpenShift Container Platform 4.19 | View |
| 15 | Red Hat | Red Hat OpenShift Container Platform 4.20 | View |
| 16 | Red Hat | Red Hat Enterprise Linux 6 | View |
| 17 | Red Hat | Red Hat Enterprise Linux 7 | View |
| 18 | Red Hat | Red Hat Enterprise Linux 8 | View |
| 19 | Red Hat | Red Hat OpenShift Container Platform 4 | View |
| 20 | libssh | libssh | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 8.1 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD |
| 8.1 | CVSS V3_1 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-5987 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-5987 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
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Get this vulnerability through the API
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