Vulnerability Monitor

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CVE-2017-14064

Ruby through 2.2.7, 2.3.x through 2.3.4, and 2.4.x through 2.4.1 can expose arbitrary memory during a JSON.generate call. The issues lies in using strdup in ext/json/ext/generator/generator.c, which will stop after encountering a '\0' byte, returning a pointer to a string of length zero, which is not the length stored in space_len.

Published

2017-08-31T17:29:00.183

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	ruby-lang	ruby	≤ 2.2.7	Yes
Application	ruby-lang	ruby	2.3.0	Yes
Application	ruby-lang	ruby	2.3.0	Yes
Application	ruby-lang	ruby	2.3.0	Yes
Application	ruby-lang	ruby	2.3.1	Yes
Application	ruby-lang	ruby	2.3.2	Yes
Application	ruby-lang	ruby	2.3.3	Yes
Application	ruby-lang	ruby	2.3.4	Yes
Application	ruby-lang	ruby	2.4.0	Yes
Application	ruby-lang	ruby	2.4.0	Yes
Application	ruby-lang	ruby	2.4.0	Yes
Application	ruby-lang	ruby	2.4.0	Yes
Application	ruby-lang	ruby	2.4.0	Yes
Application	ruby-lang	ruby	2.4.1	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	17.10	Yes
Operating System	redhat	enterprise_linux_desktop	7.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	Yes
Operating System	redhat	enterprise_linux_server_aus	7.4	Yes
Operating System	redhat	enterprise_linux_server_aus	7.6	Yes
Operating System	redhat	enterprise_linux_server_eus	7.4	Yes
Operating System	redhat	enterprise_linux_server_eus	7.5	Yes
Operating System	redhat	enterprise_linux_server_eus	7.6	Yes
Operating System	redhat	enterprise_linux_server_tus	7.4	Yes
Operating System	redhat	enterprise_linux_server_tus	7.6	Yes
Operating System	redhat	enterprise_linux_workstation	7.0	Yes

References

http://www.securityfocus.com/bid/100890 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1039363 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1042004 Third Party Advisory, VDB Entry ([email protected])
https://access.redhat.com/errata/RHSA-2017:3485 Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2018:0378 Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2018:0583 Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2018:0585 Third Party Advisory ([email protected])
https://bugs.ruby-lang.org/issues/13853 Issue Tracking, Patch, Vendor Advisory ([email protected])
https://github.com/flori/json/commit/8f782fd8e181d9cfe9387ded43a5ca9692266b85 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://hackerone.com/reports/209949 Exploit, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html Mailing List, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/201710-18 Third Party Advisory ([email protected])
https://usn.ubuntu.com/3685-1/ Third Party Advisory ([email protected])
https://www.debian.org/security/2017/dsa-3966 Third Party Advisory ([email protected])
https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/ Vendor Advisory ([email protected])
https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/ Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/100890 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1039363 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1042004 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2017:3485 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2018:0378 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2018:0583 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2018:0585 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.ruby-lang.org/issues/13853 Issue Tracking, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/flori/json/commit/8f782fd8e181d9cfe9387ded43a5ca9692266b85 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://hackerone.com/reports/209949 Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201710-18 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/3685-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2017/dsa-3966 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)