CVE-2021-28965

The REXML gem before 3.2.5 in Ruby before 2.6.7, 2.7.x before 2.7.3, and 3.x before 3.0.1 does not properly address XML round-trip issues. An incorrect document can be produced after parsing and serializing.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 48%
VendorProductVersion
ruby-langrexml
𝑥
< 3.2.5
ruby-langruby
𝑥
< 2.6.7
ruby-langruby
2.7.0 ≤
𝑥
< 2.7.3
ruby-langruby
3.0.0 ≤
𝑥
< 3.0.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
ruby2.7
bullseye
2.7.4-1+deb11u1
fixed
stretch
postponed
bullseye (security)
2.7.4-1+deb11u2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
ruby-rexml
jammy
dne
impish
ignored
hirsute
ignored
groovy
ignored
focal
dne
bionic
dne
xenial
dne
trusty
dne
ruby2.3
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
dne
xenial
Fixed 2.3.1-2~ubuntu16.04.16
released
trusty
dne
ruby2.5
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
Fixed 2.5.1-1ubuntu1.9
released
xenial
dne
trusty
dne
ruby2.7
impish
Fixed 2.7.3-2ubuntu1
released
hirsute
Fixed 2.7.2-4ubuntu1.1
released
groovy
Fixed 2.7.1-3ubuntu1.3
released
focal
Fixed 2.7.0-5ubuntu1.4
released
bionic
dne
xenial
dne
trusty
dne
References
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WTVFTLFVCSUE5CXHINJEUCKSHU4SWDMT/
https://security.netapp.com/advisory/ntap-20210528-0003/
https://www.ruby-lang.org/en/news/2021/04/05/xml-round-trip-vulnerability-in-rexml-cve-2021-28965/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WTVFTLFVCSUE5CXHINJEUCKSHU4SWDMT/
https://security.netapp.com/advisory/ntap-20210528-0003/
https://www.ruby-lang.org/en/news/2021/04/05/xml-round-trip-vulnerability-in-rexml-cve-2021-28965/