CVE-2007-4924
The Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323 before 2.2.4, allows remote attackers to…
- 5.0MediumCVSS base score
- 10.7%Exploitation in 30 daysEPSS · top 4.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
The Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323 before 2.2.4, allows remote attackers to cause a denial of service (crash) via an invalid Content-Length header field in Session Initiation Protocol (SIP) packets, which causes a \0 byte to be written to an "attacker-controlled address."
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. A reference of the record is tagged as an exploit.
Show the exploits2
Exploit-DB1 entry
- OpenH323 Opal SIP Protocol - Remote Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 9240dos, windowspublished 24 Jul 2009Verified
References tagged exploit1 reference
- 9240 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 21 days later
· 21 days later
Published
- 17 years later
· 17 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 10.7% · top 4.2% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Affected products
n/a
- affected n/a
References
22
- 27118 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 27271 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 1018776 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 25955 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 27129 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- MDKSA-2007:205 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=296371 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 28380 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 41637 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- RHSA-2007:0957 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- [ekiga-list] 20070917 [ANNOUNCE] Ekiga 2.0.10 released (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-562-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- oval:org.mitre.oval:def:11398 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- http://www.s21sec.com/avisos/s21sec-037-en.txt (opens in a new tab)x_refsource_MISCx_transferred
- 20071011 S21SEC-037-en: OPAL SIP Protocol Remote Denial of Service (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- SUSE-SR:2007:021 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- ADV-2007-3413 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- ADV-2007-3414 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 9240 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 27524 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19&r2=2.83.2.20 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 27128 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2007-4905 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2007-4924)Record last updated .