Debian Security Bug TrackerDEBIANCVE:CVE-2021-45955CVE-2021-45955
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.6 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
50.5%
Dnsmasq 2.86 has a heap-based buffer overflow in resize_packet (called from FuzzResizePacket and fuzz_rfc1035.c) because of the lack of a proper bounds check upon pseudo header re-insertion. NOTE: the vendor’s position is that CVE-2021-45951 through CVE-2021-45957 “do not represent real vulnerabilities, to the best of our knowledge.” However, a contributor states that a security patch (mentioned in 016162.html) is needed
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | dnsmasq | <= 2.89-1 | dnsmasq_2.89-1_all.deb |
| Debian | 11 | all | dnsmasq | <= 2.85-1 | dnsmasq_2.85-1_all.deb |
| Debian | 10 | all | dnsmasq | <= 2.80-1+deb10u1 | dnsmasq_2.80-1+deb10u1_all.deb |
| Debian | 999 | all | dnsmasq | <= 2.90-4 | dnsmasq_2.90-4_all.deb |
| Debian | 13 | all | dnsmasq | <= 2.90-4 | dnsmasq_2.90-4_all.deb |
Related
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.6 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
50.5%