Ubuntu.comUB:CVE-2017-13704CVE-2017-13704
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.648 Medium
EPSS
Percentile
97.9%
In dnsmasq before 2.78, if the DNS packet size does not match the expected
size, the size parameter in a memset call gets a negative value. As it is
an unsigned value, memset ends up writing up to 0xffffffff zero’s
(0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.
Bugs
Notes
| Author | Note |
|---|---|
| mdeslaur | regression introduced in 2.77 |
References
lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2017q3/011729.html
thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=63437ffbb58837b214b4b92cb1c54bc5f3279928
launchpad.net/bugs/cve/CVE-2017-13704
nvd.nist.gov/vuln/detail/CVE-2017-13704
security-tracker.debian.org/tracker/CVE-2017-13704
www.cve.org/CVERecord?id=CVE-2017-13704
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.648 Medium
EPSS
Percentile
97.9%