CVE-2019-3862
CRITICALCVSS 9.1/10EPSS 7.90%
Last modified
CVE-2019-3862 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit status message and no payload are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.. EPSS estimates a 7.90% chance of exploitation in the next 30 days.
Description
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit status message and no payload are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libssh2 | Libssh2 | < 1.8.1 |
| Fedoraproject | Fedora | 29 |
| Debian | Debian Linux | 8.0 |
| Netapp | Ontap Select Deploy Administration Utility | All versions |
| Opensuse | Leap | 42.3 |
References
- https://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.htmlMailing List, Third Party Advisory
- https://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.htmlThird Party Advisory
- https://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.htmlPatch, Third Party Advisory, VDB Entry
- https://www.openwall.com/lists/oss-security/2019/03/18/3Mailing List, Patch, Third Party Advisory
- https://www.securityfocus.com/bid/107485Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.htmlMailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Mar/25Mailing List, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190327-0005/Third Party Advisory
- https://www.libssh2.org/CVE-2019-3862.htmlVendor Advisory
- https://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.htmlMailing List, Third Party Advisory
- https://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.htmlThird Party Advisory
- https://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.htmlPatch, Third Party Advisory, VDB Entry
- https://www.openwall.com/lists/oss-security/2019/03/18/3Mailing List, Patch, Third Party Advisory
- https://www.securityfocus.com/bid/107485Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.htmlMailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Mar/25Mailing List, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190327-0005/Third Party Advisory
- https://www.libssh2.org/CVE-2019-3862.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-3862?
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit status message and no payload are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
How severe is CVE-2019-3862?
CVE-2019-3862 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 7.90% probability of exploitation in the next 30 days.
How do I fix CVE-2019-3862?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2019-3862?
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