High severity · published Apr 21, 2021
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
7.5
CVSS
5.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.1% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
34 · source: NVD
RE
Rexml · Ruby-lang
before 3.2.5 · source: NVD
RU
Ruby · Ruby-lang
before 2.6.7; 2.7.0 before 2.7.3; 3.0.0 before 3.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28965
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28965
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WTVFTLFVCSUE5CXHINJEUCKSHU4SWDMT/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210528-0003/
Vendor Advisory
https://www.ruby-lang.org/en/news/2021/04/05/xml-round-trip-vulnerability-in-rexml-cve-2021-28965/
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