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CVE-2018-15473

5.3 · MEDIUM

OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed,…

Published Aug 17, 2018CWE-362EPSS 98.63%

Overview

CVE-2018-15473 is a medium-severity vulnerability. It was published on August 17, 2018 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.openwall.com/lists/oss-security/2018/08/15/5Refwww.securityfocus.com/bid/105140Refwww.securitytracker.com/id/1041487Refaccess.redhat.com/errata/RHSA-2019:0711Refaccess.redhat.com/errata/RHSA-2019:2143Refbugs.debian.org/906236Refcert-portal.siemens.com/productcert/pdf/ssa-412672.pdfGitHubgithub.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0Reflists.debian.org/debian-lts-announce/2018/08/msg00022.htmlRefpsirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011

How CyberStrike helps

Frequently asked questions

What is CVE-2018-15473?

CVE-2018-15473 is a medium-severity vulnerability. It was published on August 17, 2018 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2018-15473?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-15473?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-15473?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-15473 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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