https://bugzilla.redhat.com/show_bug.cgi?id=1942545
Bug ID: 1942545
Summary: CVE-2021-21342 XStream: SSRF 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 a server-side forgery request. 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-hvv8-336g-rx3m
https://x-stream.github.io/CVE-2021-21342.html
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