https://bugzilla.redhat.com/show_bug.cgi?id=1934061
Bug ID: 1934061
Summary: CVE-2021-25329 tomcat: Incomplete fix for
CVE-2020-9484 (RCE via session persistence)
Product: Security Response
Hardware: All
OS: Linux
Status: NEW
Component: vulnerability
Keywords: Security
Severity: low
Priority: low
Assignee: security-response-team(a)redhat.com
Reporter: jwon(a)redhat.com
CC: aboyko(a)redhat.com, aileenc(a)redhat.com,
akoufoud(a)redhat.com, alazarot(a)redhat.com,
alee(a)redhat.com, almorale(a)redhat.com,
anstephe(a)redhat.com, asoldano(a)redhat.com,
atangrin(a)redhat.com, avibelli(a)redhat.com,
bbaranow(a)redhat.com, bgeorges(a)redhat.com,
bmaxwell(a)redhat.com, brian.stansberry(a)redhat.com,
cdewolf(a)redhat.com, chazlett(a)redhat.com,
cmoulliard(a)redhat.com, coolsvap(a)gmail.com,
csutherl(a)redhat.com, darran.lofthouse(a)redhat.com,
dbecker(a)redhat.com, dkreling(a)redhat.com,
dosoudil(a)redhat.com, drieden(a)redhat.com,
eleandro(a)redhat.com, etirelli(a)redhat.com,
fjuma(a)redhat.com, ggaughan(a)redhat.com,
gmalinko(a)redhat.com, gzaronik(a)redhat.com,
huwang(a)redhat.com, ibek(a)redhat.com,
ikanello(a)redhat.com, ivan.afonichev(a)gmail.com,
iweiss(a)redhat.com, janstey(a)redhat.com,
java-sig-commits(a)lists.fedoraproject.org,
jclere(a)redhat.com, jjoyce(a)redhat.com,
jochrist(a)redhat.com, jolee(a)redhat.com,
jpallich(a)redhat.com, jperkins(a)redhat.com,
jschatte(a)redhat.com, jschluet(a)redhat.com,
jstastny(a)redhat.com, jwon(a)redhat.com,
krathod(a)redhat.com, krzysztof.daniel(a)gmail.com,
kverlaen(a)redhat.com, kwills(a)redhat.com,
lgao(a)redhat.com, lhh(a)redhat.com, lpeer(a)redhat.com,
lthon(a)redhat.com, mburns(a)redhat.com,
mkolesni(a)redhat.com, mnovotny(a)redhat.com,
msochure(a)redhat.com, msvehla(a)redhat.com,
mszynkie(a)redhat.com, nwallace(a)redhat.com,
pgallagh(a)redhat.com, pjindal(a)redhat.com,
pmackay(a)redhat.com, rguimara(a)redhat.com,
rhcs-maint(a)redhat.com, rrajasek(a)redhat.com,
rruss(a)redhat.com, rstancel(a)redhat.com,
rsvoboda(a)redhat.com, rsynek(a)redhat.com,
sclewis(a)redhat.com, scohen(a)redhat.com,
sdaley(a)redhat.com, slinaber(a)redhat.com,
smaestri(a)redhat.com, szappis(a)redhat.com,
tom.jenkinson(a)redhat.com, yborgess(a)redhat.com
Blocks: 1934010
Target Milestone: ---
Classification: Other
The fix for CVE-2020-9484 was incomplete. When using a highly unlikely
configuration edge case, the Tomcat instance was still vulnerable to
CVE-2020-9484. Note that both the previously published prerequisites for
CVE-2020-9484 and the previously published non-upgrade mitigations for
CVE-2020-9484 also apply to this issue.
Upstream commits:
Tomcat 10.0:
https://github.com/apache/tomcat/commit/6d66e99ef85da93e4d2c2a536ca51aa34...
Tomcat 9.0:
https://github.com/apache/tomcat/commit/4785433a226a20df6acbea49296e1ce7e...
Tomcat 8.5:
https://github.com/apache/tomcat/commit/93f0cc403a9210d469afc2bd9cf03ab32...
Tomcat 7.0:
https://github.com/apache/tomcat/commit/74b105657ffbd1d1de80455f03446c3bb...
Reference:
http://mail-archives.apache.org/mod_mbox/tomcat-announce/202103.mbox/%3C8...
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