CVE-2007-4897 Denial of service in n/a

Medium 5.0 Published 14 Sep 2007 Updated 7 Aug 2024

Remote attackers can crash applications using pwlib via a long argument to PString::vsprintf, causing denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2007-4897?

CVE-2007-4897 is a medium-severity denial of service vulnerability in n/a, published on 14 Sep 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

pwlib, as used by Ekiga 2.0.5 and possibly other products, allows remote attackers to cause a denial of service (application crash) via a long argument to the PString::vsprintf function, related to a "memory management flaw". NOTE: this issue was originally reported as being in the SIPURL::GetHostAddress function in Ekiga (formerly GnomeMeeting).

Weakness: CWE-399

Which versions are affected by CVE-2007-4897?

It affects 1 product.

Linux distribution packages (8)

`pwlib` Red Hat:enterprise_linux:5::client	All versions	`0:1.10.1-7.0.1.el5`
`pwlib-debuginfo` Red Hat:enterprise_linux:5::client	All versions	`0:1.10.1-7.0.1.el5`
`pwlib` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:1.10.1-7.0.1.el5`
`pwlib-debuginfo` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:1.10.1-7.0.1.el5`
`pwlib-devel` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:1.10.1-7.0.1.el5`
`pwlib` Red Hat:rhel_productivity:5	All versions	`0:1.10.1-7.0.1.el5`
`pwlib-debuginfo` Red Hat:rhel_productivity:5	All versions	`0:1.10.1-7.0.1.el5`
`pwlib-devel` Red Hat:rhel_productivity:5	All versions	`0:1.10.1-7.0.1.el5`

Products include Ekiga Ekiga.

How do I fix CVE-2007-4897?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2007-4897 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-4897 exists.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as DTSA-94-1, GHSA-m936-63jp-34qv, RHSA-2007:0932.