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CVE-2017-17562

8.1 · HIGHActively Exploited

Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI program is dynamically linked.

Published Dec 12, 2017EPSS 96.26%

Overview

CVE-2017-17562 is a high-severity vulnerability. It was published on December 12, 2017 and has a CVSS 3.1 base score of 8.1 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI program is dynamically linked. This is a result of initializing the environment of forked CGI scripts using untrusted HTTP request parameters in the cgiHandler function in cgi.c. When combined with the glibc dynamic linker, this behaviour can be abused for remote code execution using special parameter names such as LD_PRELOAD. An attacker can POST their shared object payload in the body of the request, and reference it using /proc/self/fd/0.

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.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.htmlRefwww.securitytracker.com/id/1040702GitHubgithub.com/elttam/advisories/tree/master/CVE-2017-17562GitHubgithub.com/embedthis/goahead/commit/6f786c123196eb622625a920d54048629a7caa74GitHubgithub.com/embedthis/goahead/issues/249Refwww.elttam.com.au/blog/goahead/Refwww.exploit-db.com/exploits/43360/Refwww.exploit-db.com/exploits/43877/Refwww.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.htmlRefwww.securitytracker.com/id/1040702

How CyberStrike helps

Frequently asked questions

What is CVE-2017-17562?

CVE-2017-17562 is a high-severity vulnerability. It was published on December 12, 2017 and has a CVSS 3.1 base score of 8.1 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2017-17562?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-17562?

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-2017-17562?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-17562 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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