Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10…
Priority MEDIUM 50CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10; RealPlayer 10.5 6.0.12.1040 through 6.0.12.1741; RealPlayer 11 11.0.x; RealPlayer SP 1.0.0 and 1.0.1; RealPlayer Enterprise; Mac RealPlayer 10, 10.1, 11.0, and 11.0.1; Linux RealPlayer 10, 11.0.0, and 11.0.1; and Helix Player 10.x, 11.0.0, and 11.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an ASM RuleBook with a large number of rules, related to an "array overflow."
Why it matters now
EPSS 0.0681 94th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 20
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:realnetworks:realplayer:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:10.5:*:*:*:*:*:*:* | 10.5 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:11.0.1:*:*:*:*:*:*:* | 11.0.1 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:11.0.2:*:*:*:*:*:*:* | 11.0.2 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:11.0.3:*:*:*:*:*:*:* | 11.0.3 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:11.0.4:*:*:*:*:*:*:* | 11.0.4 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:11.0.5:*:*:*:*:*:*:* | 11.0.5 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer_enterprise:*:*:*:*:*:*:*:* | all versions | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer_sp:1.0.0:*:*:*:*:*:*:* | 1.0.0 | Vulnerable | RealNetworks |
- cpe:2.3:a:realnetworks:realplayer:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:10.5:*:*:*:*:*:*:* Versions 10.5 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:11.0.1:*:*:*:*:*:*:* Versions 11.0.1 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:11.0.2:*:*:*:*:*:*:* Versions 11.0.2 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:11.0.3:*:*:*:*:*:*:* Versions 11.0.3 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:11.0.4:*:*:*:*:*:*:* Versions 11.0.4 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:11.0.5:*:*:*:*:*:*:* Versions 11.0.5 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer_enterprise:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer_sp:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·RealNetworks
Show 10 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:realnetworks:realplayer_sp:1.0.1:*:*:*:*:*:*:* | 1.0.1 | Vulnerable | RealNetworks |
| cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:a:realnetworks:realplayer:10.1:*:*:*:*:*:*:* | 10.1 | Vulnerable | RealNetworks |
| cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* | all versions | Running on | Apple |
| cpe:2.3:a:realnetworks:helix_player:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:helix_player:11.0.0:*:*:*:*:*:*:* | 11.0.0 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:helix_player:11.0.1:*:*:*:*:*:*:* | 11.0.1 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:10.0:*:linux:*:*:*:*:* | 10.0 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:11.0.0:*:linux:*:*:*:*:* | 11.0.0 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:11.0.1:*:linux:*:*:*:*:* | 11.0.1 | Vulnerable | RealNetworks |
- cpe:2.3:a:realnetworks:realplayer_sp:1.0.1:*:*:*:*:*:*:* Versions 1.0.1 Vulnerable ·RealNetworks
- cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:a:realnetworks:realplayer:10.1:*:*:*:*:*:*:* Versions 10.1 Vulnerable ·RealNetworks
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions all versions Running on ·Apple
- cpe:2.3:a:realnetworks:helix_player:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:helix_player:11.0.0:*:*:*:*:*:*:* Versions 11.0.0 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:helix_player:11.0.1:*:*:*:*:*:*:* Versions 11.0.1 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:10.0:*:linux:*:*:*:*:* Versions 10.0 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:11.0.0:*:linux:*:*:*:*:* Versions 11.0.0 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:11.0.1:*:linux:*:*:*:*:* Versions 11.0.1 Vulnerable ·RealNetworks
Remediation
Red Hat 1 advisory
- RHSA-2010:0094 Released 2010-02-09 · Red Hat rating CriticalHelixPlayer security update
- Red Hat Enterprise Linux AS version 4 HelixPlayer-1:1.0.6-1.el4_8.1, HelixPlayer-1:1.0.6-1.el4_8.1.i386, HelixPlayer-1:1.0.6-1.el4_8.1.ppc
- Red Hat Enterprise Linux Desktop version 4 HelixPlayer-1:1.0.6-1.el4_8.1, HelixPlayer-1:1.0.6-1.el4_8.1.i386
- Red Hat Enterprise Linux ES version 4 HelixPlayer-1:1.0.6-1.el4_8.1, HelixPlayer-1:1.0.6-1.el4_8.1.i386
- Red Hat Enterprise Linux WS version 4 HelixPlayer-1:1.0.6-1.el4_8.1, HelixPlayer-1:1.0.6-1.el4_8.1.i386
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2010:0094 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2010:0094 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2010:0094 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2010:0094 |
Timeline
- 2026-10-02 Threatist record created from CVE-2009-4247
- 2026-10-03 Alias added: GHSA-9h7f-xvfq-hm25
References
Advisory 1
More RealNetworks Helix Player vulnerabilities
- TI-2007-03304 Stack-based buffer overflow in the SmilTimeValue::parseWallClockValue function in… CVSS 2.0HIGH 9.3
- TI-2006-00313 Buffer overflow in swfformat.dll in multiple RealNetworks products and versions including… CVSS 2.0HIGH 9.3
- TI-2009-04041 Heap-based buffer overflow in datatype/smil/common/smlpkt.cpp in smlrender.dll in… CVSS 2.0HIGH 9.3
- TI-2009-04026 Heap-based buffer overflow in the CGIFCodec::GetPacketBuffer function in… CVSS 2.0HIGH 9.3
- TI-2009-04032 Buffer overflow in the RTSPProtocol::HandleSetParameterRequest function in… CVSS 2.0HIGH 9.3
- TI-2009-04030 Stack-based buffer overflow in RealNetworks RealPlayer 10, RealPlayer 10.5 6.0.12.1040… CVSS 2.0HIGH 9.3
Sources
- CVE-2009-4247 · CVE Program
- CVE-2009-4247 · NVD
- FIRST EPSS
- GHSA-9h7f-xvfq-hm25 · GitHub Advisory Database · CC BY 4.0
- CVE-2009-4247 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences