CVE-2007-4924 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 10.7% (pctl 96)
Patch early
A public exploit exists.
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."
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 10.68% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2007-10-08 |
| Last modified | 2026-06-16 |
Affected (2)
| Vendor | Product |
|---|---|
| ekiga | ekiga |
| openh323 project | openh323 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | OpenH323 Opal SIP Protocol - Remote Denial of Service | 2009-07-24 |
References
- http://lists.opensuse.org/opensuse-security-announce/2007-10/msg00006.html
- http://mail.gnome.org/archives/ekiga-list/2007-September/msg00103.html
- http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19&r2=2.83.2.20
- http://osvdb.org/41637
- http://secunia.com/advisories/27118
- http://secunia.com/advisories/27128
- http://secunia.com/advisories/27129
- http://secunia.com/advisories/27271
- http://secunia.com/advisories/27524
- http://secunia.com/advisories/28380
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:205
- http://www.redhat.com/support/errata/RHSA-2007-0957.html
- http://www.s21sec.com/avisos/s21sec-037-en.txt
- http://www.securityfocus.com/archive/1/482120/30/4500/threaded
- http://www.securityfocus.com/bid/25955
- http://www.securitytracker.com/id?1018776
- http://www.ubuntu.com/usn/usn-562-1
- http://www.vupen.com/english/advisories/2007/3413
- http://www.vupen.com/english/advisories/2007/3414
- https://bugzilla.redhat.com/show_bug.cgi?id=296371
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