Use-after-free vulnerability in the DisplayObject 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 leverages improper handling of the opaqueBackground property, as exploited in the wild in July 2015.
Why It Matters
Analysis dossierWhy It Matters
Use-after-free vulnerability in the DisplayObject 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 leverages improper handling of the opaqueBackground property, as exploited in the wild in July 2015.
Immediate Attention
Yes
Unknown
Risk basis: CISA KEV exploitation signal; Microsoft or Microsoft-managed product relevance; CRITICAL severity; Source-confirmed exploitation or CISA KEV/ransomware metadata
Affected Products & Remediation
9 source-backed products- adobe flash player · >= 13.0 <= 13.0.0.302; >= 18.0 <= 18.0.0.203; desktop runtime >= 18.0 <= 18.0.0.203; >= 18.0 <= 18.0.0.204; >= 11.0 <= 11.2.202.481 · NVD CPE · Source
- adobe flash player desktop runtime · >= 18.0 <= 18.0.0.203 · NVD CPE · Source
- redhat enterprise linux desktop · 5.0; 6.0 · NVD CPE · Source
- redhat enterprise linux server · 5.0; 6.0; eus 6.6 · NVD CPE · Source
- redhat enterprise linux server eus · 6.6 · NVD CPE · Source
- redhat enterprise linux workstation · 5.0; 6.0 · NVD CPE · Source
- opensuse evergreen · 11.4 · NVD CPE · Source
- suse linux enterprise desktop · 11; 12 · NVD CPE · Source
- suse linux enterprise workstation extension · 12 · NVD CPE · Source
Vendor or catalog guidance (source)
- CISA KEV: The impacted product is end-of-life and should be disconnected if still in use.
Known exploitation (source facts)
Only what a source states. Unknown means no source has said either way; it is not "not exploited".
- CISA KEV
- Listed
- Exploited (source statement)
- Yes
- Publicly disclosed (source)
- Unknown
CISA required action: The impacted product is end-of-life and should be disconnected if still in use.
Suggested hunting (rule-based inference)
SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.
Matched kev-network-exposure (CVSS AV:N, CISA KEV Listed); network-unauthenticated (CVSS AV:N, CVSS PR:N, CVSS UI:N)
Exposure
- Identify assets with the exact CVE and confirm the affected product/version against the advisory.Telemetry: DeviceTvmSoftwareVulnerabilities · KEV listing raises urgency, but inventory is needed to establish local exposure. · Rule kev-network-exposure
- Identify devices reporting this CVE and note which expose the affected service to untrusted networks.Telemetry: DeviceTvmSoftwareVulnerabilities · A network-reachable, no-privilege vector makes internet-facing instances the first exposure question. · Rule network-unauthenticated
Exploitation evidence
- Review relevant edge or application access logs for unusual requests around the advisory window.Telemetry: CommonSecurityLog · Log review is a hunting hypothesis; KEV listing alone does not show local exploitation. · Rule kev-network-exposure
Show more (2)
Exploitation evidence
- Review inbound connections to the affected service from unexpected sources since the advisory date.Telemetry: DeviceNetworkEvents · Hunting hypothesis from the CVSS vector; it does not show that exploitation occurred. · Rule network-unauthenticated
Response
- Recheck the affected assets after the source-stated mitigation or update is applied.Telemetry: DeviceTvmSoftwareVulnerabilities · A follow-up inventory check verifies local remediation. · Rule kev-network-exposure
CISA KEV Record
The impacted product is end-of-life and should be disconnected if still in use.
Change History & Source Data
— No recorded material change
- CNA / source
- psirt@adobe.com
- Record status · verification
- UPDATED · CISA KEV confirmed
- CPE
- cpe:2.3:a:adobe:flash_player:*:*:*:*:esr:*:*:*, cpe:2.3:a:adobe:flash_player:*:*:*:*:*:chrome:*:*, cpe:2.3:a:adobe:flash_player_desktop_runtime:*:*:*:*:*:*:*:*, cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*, cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*, cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*, cpe:2.3:a:adobe:flash_player:*:*:*:*:*:internet_explorer_10:*:*, cpe:2.3:a:adobe:flash_player:*:*:*:*:*:internet_explorer_11:*:*, cpe:2.3:o:microsoft:windows_8:-:*:*:*:*:*:*:*, cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
Evidence & Provenance
Linked by the query's stored exact CVE association. Review required tables and validation status before use.
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2015-5122"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel descLooking up related community queries…