Description
Adobe Flash Player 9.0.115.0 and earlier, and 8.0.39.0 and earlier, allows remote attackers to execute arbitrary code via an SWF file with a modified DeclareFunction2 Actionscript tag, which prevents an object from being instantiated properly.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | flash-plugin | 9.0.124.0-1.el5 | RHSA-2008:0221 |
| RHEL 4 | flash-plugin | 9.0.124.0-1.el4 | RHSA-2008:0221 |
| RHEL 3 | flash-plugin | 9.0.124.0-1.el3.with.oss | RHSA-2008:0221 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Adobe Flash Player 8/9.0.x - '.SWF' File 'DeclareFunction2' ActionScript Tag Remote Code Execution EDB-31630 · remote · Apr 8, 2008 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- RHSA-2008:0221 Red Hat Security Advisory: flash-plugin security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
References
- 29865 third-party-advisory
- oval:org.mitre.oval:def:10160 vdb-entry signature
- 30507 third-party-advisory
- 1019810 vdb-entry
- http://www.adobe.com/support/security/bulletins/apsb08-11.html
- ADV-2008-1724 vdb-entry
- adobe-flash-declarefunction2-bo(41717) vdb-entry
- RHSA-2008:0221 vendor-advisory
- 3805 third-party-advisory
- TA08-150A third-party-advisory
- 30430 third-party-advisory
- APPLE-SA-2008-05-28 vendor-advisory
- SUSE-SA:2008:022 vendor-advisory
- 20080414 Secunia Research: Adobe Flash Player "Declare Function (V7)" HeapOverflow mailing-list
- 29763 third-party-advisory
- 238305 vendor-advisory
- 20080408 ZDI-08-021: Adobe Flash Player DeclareFunction2 Invalid Object Use Vulnerability mailing-list
- http://www.zerodayinitiative.com/advisories/ZDI-08-021
- GLSA-200804-21 vendor-advisory
- ADV-2008-1697 vdb-entry
- 28694 vdb-entry
- TA08-100A third-party-advisory