6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5 High
AI Score
Confidence
High
0.027 Low
EPSS
Percentile
90.6%
Debian Security Advisory DSA-3222-1 [email protected]
http://www.debian.org/security/ Alessandro Ghedini
April 12, 2015 http://www.debian.org/security/faq
Package : chrony
CVE ID : CVE-2015-1821 CVE-2015-1822 CVE-2015-1853
Debian Bug : 782160
Miroslav Lichvar of Red Hat discovered multiple vulnerabilities in chrony,
an alternative NTP client and server:
CVE-2015-1821
Using particular address/subnet pairs when configuring access control
would cause an invalid memory write. This could allow attackers to
cause a denial of service (crash) or execute arbitrary code.
CVE-2015-1822
When allocating memory to save unacknowledged replies to authenticated
command requests, a pointer would be left uninitialized, which could
trigger an invalid memory write. This could allow attackers to cause a
denial of service (crash) or execute arbitrary code.
CVE-2015-1853
When peering with other NTP hosts using authenticated symmetric
association, the internal state variables would be updated before the
MAC of the NTP messages was validated. This could allow a remote
attacker to cause a denial of service by impeding synchronization
between NTP peers.
For the stable distribution (wheezy), these problems have been fixed in
version 1.24-3.1+deb7u3.
For the unstable distribution (sid), these problems have been fixed in
version 1.30-2.
We recommend that you upgrade your chrony packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 7 | armel | chrony | < 1.24-3.1+deb7u3 | chrony_1.24-3.1+deb7u3_armel.deb |
Debian | 7 | i386 | chrony | < 1.24-3.1+deb7u3 | chrony_1.24-3.1+deb7u3_i386.deb |
Debian | 7 | mips | chrony | < 1.24-3.1+deb7u3 | chrony_1.24-3.1+deb7u3_mips.deb |
Debian | 7 | mipsel | chrony | < 1.24-3.1+deb7u3 | chrony_1.24-3.1+deb7u3_mipsel.deb |
Debian | 7 | armhf | chrony | < 1.24-3.1+deb7u3 | chrony_1.24-3.1+deb7u3_armhf.deb |
Debian | 7 | s390 | chrony | < 1.24-3.1+deb7u3 | chrony_1.24-3.1+deb7u3_s390.deb |
Debian | 7 | sparc | chrony | < 1.24-3.1+deb7u3 | chrony_1.24-3.1+deb7u3_sparc.deb |
Debian | 7 | powerpc | chrony | < 1.24-3.1+deb7u3 | chrony_1.24-3.1+deb7u3_powerpc.deb |
Debian | 6 | all | chrony | < 1.24-3+squeeze2 | chrony_1.24-3+squeeze2_all.deb |
Debian | 6 | amd64 | chrony | < 1.24-3+squeeze2 | chrony_1.24-3+squeeze2_amd64.deb |
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5 High
AI Score
Confidence
High
0.027 Low
EPSS
Percentile
90.6%