CVE-2018-8778

HIGHScheduled

Published:Apr 3, 2018(8 years ago)

Modified:Nov 21, 2024

Remote ExploitNo Auth RequiredNo InteractionLow Complexity

Vulnerability Description

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, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure.

Attack Characteristics

Network AccessLow ComplexityNo Auth NeededNo User Interaction

🤖

AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

Vendor	Product	Versions	Fixed In
ruby-lang	ruby	2.2.0 - 2.2.10	-
ruby-lang	ruby	2.3.0 - 2.3.7	-
ruby-lang	ruby	2.4.0 - 2.4.4

Timeline

Published
CVE disclosed publicly
Apr 3, 20188 years ago
Last Modified
Most recent update
Nov 21, 20241 year ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20261 month ago

References

https://access.redhat.com/errata/RHSA-2019:2028
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.htmlMailing List
https://lists.debian.org/debian-lts-announce/2018/04/msg00024.htmlMailing List

CVSS Score

v3.1

7.5/ 10.0

HIGH

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

At a Glance

Affected Products

References

ruby-lang / ruby

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

http://www.securityfocus.com/bid/103693Third Party Advisory

http://www.securitytracker.com/id/1042004Third Party Advisory

https://access.redhat.com/errata/RHSA-2018:3729Third Party Advisory

https://access.redhat.com/errata/RHSA-2018:3730Third Party Advisory

https://access.redhat.com/errata/RHSA-2018:3731Third Party Advisory

https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing List

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/buffer-under-read-unpack-...Vendor Advisory

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

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

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

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

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

http://www.securityfocus.com/bid/103693Third Party Advisory

http://www.securitytracker.com/id/1042004Third Party Advisory

https://access.redhat.com/errata/RHSA-2018:3729Third Party Advisory

https://access.redhat.com/errata/RHSA-2018:3730Third Party Advisory

https://access.redhat.com/errata/RHSA-2018:3731Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:2028

https://lists.debian.org/debian-lts-announce/2018/04/msg00023.htmlMailing List

https://lists.debian.org/debian-lts-announce/2018/04/msg00024.htmlMailing List

https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing List

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/buffer-under-read-unpack-...Vendor Advisory

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

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

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

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

CVSS v3 Vector

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

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Impact

ScopeUnchanged

ConfidentialityHigh

IntegrityNone

AvailabilityNone

Impact Analysis

ConfidentialityHigh

NoneLowHigh

IntegrityNone

NoneLowHigh

AvailabilityNone

NoneLowHigh

CVE-2018-8778

✦ Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

Vulnerability Description