Home/CVE/Heap-based buffer overflow in the tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, mi
CVE

CVE-2009-2957

Heap-based buffer overflow in the tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, mi

Heap-based buffer overflow in the tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, might allow remote attackers to execute arbitrary code via a long filename in a TFTP packet, as demonstrated by a read (aka RRQ) request.

MEDIUM · CVSS 6.8 EPSS 0.08525
Schedule remediation
  • EPSS percentile: top 7% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
▤

Affected Products & Versions

2
thekelleys dnsmasq<= 2.49
thekelleys dnsmasqall versions
⚠

Public Exploits & PoCs

1
dosDnsmasq < 2.50 - Heap Overflow / Null Pointer Dereferenceverified
◈

Detection Rules (IDS/IPS)

2
snort-communityPROTOCOL-TFTP GET filename overflow attemptattempted-admin
snort-communityPROTOCOL-TFTP PUT filename overflow attemptattempted-admin
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
▣

Scoring & Timeline

6.8
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
Published to NVD02 Sep 2009 · 03:30 PM
⚑

Vendor Advisories

3
rhsaRHSA-2010:0095Important
usnUSN-827-1
rhsaRHSA-2009:1238Important
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://secunia.com/advisories/36563
http://www.coresecurity.com/content/dnsmasq-vulnerabilitiesPatch
http://www.redhat.com/support/errata/RHSA-2009-1238.html
http://www.securityfocus.com/bid/36121Patch
http://www.thekelleys.org.uk/dnsmasq/CHANGELOGVendor Advisory
http://www.ubuntu.com/usn/USN-827-1
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin