https://bugzilla.redhat.com/show_bug.cgi?id=1942550
Bug ID: 1942550
Summary: CVE-2021-21343 XStream: arbitrary file deletion on the
local host via crafted input stream
Product: Security Response
Hardware: All
OS: Linux
Status: NEW
Component: vulnerability
Keywords: Security
Severity: medium
Priority: medium
Assignee: security-response-team(a)redhat.com
Reporter: gsuckevi(a)redhat.com
CC: abenaiss(a)redhat.com, aileenc(a)redhat.com,
akoufoud(a)redhat.com, alazarot(a)redhat.com,
almorale(a)redhat.com, anstephe(a)redhat.com,
aos-bugs(a)redhat.com, ataylor(a)redhat.com,
bibryam(a)redhat.com, bmontgom(a)redhat.com,
chazlett(a)redhat.com, dchen(a)redhat.com,
drieden(a)redhat.com, eparis(a)redhat.com,
etirelli(a)redhat.com, ggaughan(a)redhat.com,
gmalinko(a)redhat.com, gvarsami(a)redhat.com,
hbraun(a)redhat.com, ibek(a)redhat.com,
janstey(a)redhat.com, java-maint(a)redhat.com,
java-sig-commits(a)lists.fedoraproject.org,
jburrell(a)redhat.com, jcoleman(a)redhat.com,
jochrist(a)redhat.com, jokerman(a)redhat.com,
jolee(a)redhat.com, jross(a)redhat.com,
jschatte(a)redhat.com, jstastny(a)redhat.com,
jwon(a)redhat.com, kaycoth(a)redhat.com,
kconner(a)redhat.com, krathod(a)redhat.com,
kverlaen(a)redhat.com, ldimaggi(a)redhat.com,
lkundrak(a)v3.sk, mizdebsk(a)redhat.com,
mnovotny(a)redhat.com, nstielau(a)redhat.com,
nwallace(a)redhat.com, pantinor(a)redhat.com,
pbhattac(a)redhat.com, pjindal(a)redhat.com,
rrajasek(a)redhat.com, rsynek(a)redhat.com,
rwagner(a)redhat.com, sdaley(a)redhat.com,
sponnaga(a)redhat.com, tcunning(a)redhat.com,
tkirby(a)redhat.com, vbobade(a)redhat.com
Target Milestone: ---
Classification: Other
XStream is a Java library to serialize objects to XML and back again. In
XStream before version 1.4.16, there is a vulnerability where the processed
stream at unmarshalling time contains type information to recreate the formerly
written objects. XStream creates therefore new instances based on these type
information. An attacker can manipulate the processed input stream and replace
or inject objects, that result in the deletion of a file on the local host. No
user is affected, who followed the recommendation to setup XStream's security
framework with a whitelist limited to the minimal required types. If you rely
on XStream's default blacklist of the Security Framework, you will have to use
at least version 1.4.16.
References:
https://github.com/x-stream/xstream/security/advisories/GHSA-74cv-f58x-f9wf
https://x-stream.github.io/CVE-2021-21343.html
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