Vulnerability Details CVE-2015-1821
Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.026
EPSS Ranking 85.0%
CVSS Severity
CVSS v2 Score 6.5
References
- http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html
- http://www.debian.org/security/2015/dsa-3222
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/73955
- https://security.gentoo.org/glsa/201507-01
- http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html
- http://www.debian.org/security/2015/dsa-3222
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/73955
- https://security.gentoo.org/glsa/201507-01
Products affected by CVE-2015-1821
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cpe:2.3:a:tuxfamily:chrony:1.0
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cpe:2.3:a:tuxfamily:chrony:1.1
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cpe:2.3:a:tuxfamily:chrony:1.18
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cpe:2.3:a:tuxfamily:chrony:1.19
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cpe:2.3:a:tuxfamily:chrony:1.19.99.1
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cpe:2.3:a:tuxfamily:chrony:1.19.99.2
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cpe:2.3:a:tuxfamily:chrony:1.19.99.3
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cpe:2.3:a:tuxfamily:chrony:1.20
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cpe:2.3:a:tuxfamily:chrony:1.21
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cpe:2.3:a:tuxfamily:chrony:1.23
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cpe:2.3:a:tuxfamily:chrony:1.23.1
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cpe:2.3:a:tuxfamily:chrony:1.24
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cpe:2.3:a:tuxfamily:chrony:1.25
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cpe:2.3:a:tuxfamily:chrony:1.26
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cpe:2.3:a:tuxfamily:chrony:1.27
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cpe:2.3:a:tuxfamily:chrony:1.28
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cpe:2.3:a:tuxfamily:chrony:1.29
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cpe:2.3:a:tuxfamily:chrony:1.31
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cpe:2.3:o:debian:debian_linux:7.0