CVE-2018-8779

Home/CVE/In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the UNIXServer.op

CVE

In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the UNIXServer.op

In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the UNIXServer.open and UNIXSocket.open methods are not checked for null characters. It may be connected to an unintended socket.

HIGH · CVSS 7.5 EPSS 0.01284

Schedule remediation

CVSS base score ≥ 7.0

Sigma rules3 YARA rules0

⬡

Weakness Classification

CWE-20Improper Input Validation

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Affected Products & Versions

ruby-lang ruby>= 2.2.0 and < 2.2.10
ruby-lang ruby>= 2.3.0 and < 2.3.7
ruby-lang ruby>= 2.4.0 and < 2.4.4
ruby-lang ruby>= 2.5.0 and < 2.5.1
ruby-lang rubyall versions
canonical ubuntu linuxall versions
debian linuxall versions

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Sigma Hunt Rules

Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.

productmediumRuby on Rails Framework Exceptions

productmediumPotential Ruby Reverse Shell

productmediumRuby Inline Command Execution

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Scoring & Timeline

7.5

HIGH · CVSS v3.0 · cve@mitre.org

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD03 Apr 2018 · 10:29 PM

CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

⚑

Vendor Advisories

suse-csafSUSE-SU-2020:1570-1
suse-csafopenSUSE-SU-2019:1771-1
suse-csafSUSE-SU-2019:1804-1
rhsaRHSA-2018:3729Important
rhsaRHSA-2018:3731Important
Show all 8 vendor advisoriesrhsaRHSA-2018:3730Important
rhsaRHSA-2019:2028Moderate
usnUSN-3626-1

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html

http://www.securityfocus.com/bid/103767Third Party AdvisoryVDB Entry

http://www.securitytracker.com/id/1042004Third Party AdvisoryVDB Entry

https://lists.debian.org/debian-lts-announce/2018/04/msg00023.htmlMailing ListThird Party Advisory

https://lists.debian.org/debian-lts-announce/2018/04/msg00024.htmlThird Party Advisory

https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing ListThird Party Advisory

Show all 13 references

https://usn.ubuntu.com/3626-1/Third Party Advisory

https://www.debian.org/security/2018/dsa-4259Third Party Advisory

https://www.ruby-lang.org/en/news/2018/03/28/poisoned-nul-byte-unixsocket-cve-2018-8779/Vendor Advisory

https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/PatchVendor Advisory

https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/PatchVendor Advisory

https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/PatchVendor Advisory

https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/PatchVendor Advisory

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