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CVE-2015-5123

9.8 · CRITICALActively Exploited

Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.302 on Windows and OS X, 14.x through 18.0.0.203 on Windows…

Published Jul 14, 2015redhatCWE-416EPSS 18.83%

Overview

CVE-2015-5123 is a critical-severity vulnerability affecting redhat enterprise_linux_desktop. It was published on July 14, 2015 and has a CVSS 3.1 base score of 9.8 (CRITICAL). 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 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.302 on Windows and OS X, 14.x through 18.0.0.203 on Windows and OS X, 11.x through 11.2.202.481 on Linux, and 12.x through 18.0.0.204 on Linux Chrome installations allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted Flash content that overrides a valueOf function, as exploited in the wild in July 2015.

Remediation

Check the references section for vendor advisories and patches from redhat. Update enterprise_linux_desktop to the latest patched version. 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.

Affected products

VendorProductVersionsStatus
adobeflash_player11.0Affected
adobeflash_player_desktop_runtime18.0Affected

References

Refblog.trendmicro.com/trendlabs-security-intelligence/new-zero-day-vulnerability-cve-2015-5123-in-adobe-flash-emerges-from-hacking-team-leak/Reflists.opensuse.org/opensuse-security-announce/2015-07/msg00028.htmlReflists.opensuse.org/opensuse-security-announce/2015-07/msg00029.htmlReflists.opensuse.org/opensuse-security-announce/2015-07/msg00032.htmlRefmarc.info/?l=bugtraq&m=144050155601375&w=2Refrhn.redhat.com/errata/RHSA-2015-1235.htmlRefwww.kb.cert.org/vuls/id/918568Refwww.securityfocus.com/bid/75710Refwww.securitytracker.com/id/1032890Refwww.us-cert.gov/ncas/alerts/TA15-195A

How CyberStrike helps

Frequently asked questions

What is CVE-2015-5123?

CVE-2015-5123 is a critical-severity vulnerability affecting redhat enterprise_linux_desktop. It was published on July 14, 2015 and has a CVSS 3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2015-5123?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-5123?

Check the references section for vendor advisories and patches from redhat. Update enterprise_linux_desktop to the latest patched version. 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-2015-5123?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-5123 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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