CVE-2009-2958 EXPLOIT
4.3
MEDIUM · CVSS 2.0 · EPSS 10.4% (pctl 96)
Patch early
A public exploit exists.
Description
The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ) request with a malformed blksize option.
Scoring
| CVSS | 4.3 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:M/Au:N/C:N/I:N/A:P |
| EPSS | 10.38% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-399 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2009-09-02 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| thekelleys | dnsmasq |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Dnsmasq < 2.50 - Heap Overflow / Null Pointer Dereference | 2009-09-09 |
References
- http://secunia.com/advisories/36563
- http://www.coresecurity.com/content/dnsmasq-vulnerabilities
- http://www.redhat.com/support/errata/RHSA-2009-1238.html
- http://www.securityfocus.com/bid/36120
- http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
- http://www.ubuntu.com/usn/USN-827-1
- https://bugzilla.redhat.com/show_bug.cgi?id=519020
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9816
- https://rhn.redhat.com/errata/RHSA-2010-0095.html
- http://secunia.com/advisories/36563
- http://www.coresecurity.com/content/dnsmasq-vulnerabilities
- http://www.redhat.com/support/errata/RHSA-2009-1238.html
- http://www.securityfocus.com/bid/36120
- http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
- http://www.ubuntu.com/usn/USN-827-1
- https://bugzilla.redhat.com/show_bug.cgi?id=519020
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9816
- https://rhn.redhat.com/errata/RHSA-2010-0095.html
→ the Explorer · watch your stack · NVD