CVE-2007-4769 Denial of service in n/a
Remote authenticated users can crash the PostgreSQL backend via a crafted regular expression in the TCL parser, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2007-4769?
CVE-2007-4769 is a medium-severity denial of service vulnerability in Postgresql Postgresql, published on 9 Jan 2008. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The regular expression parser in TCL before 8.4.17, as used in PostgreSQL 8.2 before 8.2.6, 8.1 before 8.1.11, 8.0 before 8.0.15, and 7.4 before 7.4.19, allows remote authenticated users to cause a denial of service (backend crash) via an out-of-bounds backref number.
Weakness: CWE-189
Which versions are affected by CVE-2007-4769?
It affects 2 products.
Products include Postgresql Postgresql, Tcl Tk Tcl Tk.
How do I fix CVE-2007-4769?
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-2007-4769 being exploited?
There is no known exploitation of CVE-2007-4769 in the wild and no public exploit code.
Other vulnerabilities in Postgresql Postgresql
Sources
Also known as GHSA-66vv-jcch-hx6x.