Fluid Attacks Database

Description

REXML DoS vulnerability

Impact

The REXML gem before 3.3.2 has a DoS vulnerability when it parses an XML that has many entity expansions with SAX2 or pull parser API.

If you need to parse untrusted XMLs with SAX2 or pull parser API, you may be impacted to this vulnerability.

Patches

The REXML gem 3.3.3 or later include the patch to fix the vulnerability.

Workarounds

Don't parse untrusted XMLs with SAX2 or pull parser API.

References

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Package	Affected version	Patched versions
alpine v3.20	ruby-rexml	=3.2.5-r0 \|\| =3.2.5-r1 \|\| =3.2.5-r2 \|\| =3.2.5-r3 \|\| =3.2.6-r0 \|\| =3.2.6-r1 \|\| =3.2.9-r0 \|\| >=0 <3.3.9-r0	3.3.9-r0
debian 11	ruby2.7	=2.7.4-1 \|\| =2.7.4-1+deb11u1 \|\| =2.7.4-1+deb11u2 \|\| >=0 <2.7.4-1+deb11u3	2.7.4-1+deb11u3
alpine v3.19	ruby-rexml	=3.2.5-r0 \|\| =3.2.5-r1 \|\| =3.2.5-r2 \|\| =3.2.5-r3 \|\| =3.2.6-r0 \|\| >=0 <3.3.9-r0	3.3.9-r0
alpine v3.22	ruby-rexml	=3.2.5-r0 \|\| =3.2.5-r1 \|\| =3.2.5-r2 \|\| =3.2.5-r3 \|\| =3.2.6-r0 \|\| =3.2.6-r1 \|\| =3.2.9-r0 \|\| >=0 <3.3.9-r0	3.3.9-r0
debian 13	ruby3.3	>=0 <3.3.5-1	3.3.5-1
debian 12	ruby3.1	=3.1.2-7 \|\| =3.1.2-7+deb12u1 \|\| =3.1.2-7+hurd.1 \|\| =3.1.2-8 \|\| =3.1.2-8.1~exp1 \|\| =3.1.2-8.3 \|\| =3.1.2-8.4 \|\| =3.1.2-8.5	-
debian 14	ruby3.3	>=0 <3.3.5-1	3.3.5-1
alpine v3.21	ruby-rexml	=3.2.5-r0 \|\| =3.2.5-r1 \|\| =3.2.5-r2 \|\| =3.2.5-r3 \|\| =3.2.6-r0 \|\| =3.2.6-r1 \|\| =3.2.9-r0 \|\| >=0 <3.3.9-r0	3.3.9-r0
rubygems	rexml	>=0 <3.3.3	3.3.3
alpine v3.23	ruby-rexml	=3.2.5-r0 \|\| =3.2.5-r1 \|\| =3.2.5-r2 \|\| =3.2.5-r3 \|\| =3.2.6-r0 \|\| =3.2.6-r1 \|\| =3.2.9-r0 \|\| >=0 <3.3.9-r0	3.3.9-r0

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Aliases

References

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