https://bugzilla.redhat.com/show_bug.cgi?id=2004820
Bug ID: 2004820
Summary: CVE-2021-41079 tomcat: Apache Tomcat DoS with
unexpected TLS packet
Product: Security Response
Hardware: All
OS: Linux
Status: NEW
Component: vulnerability
Keywords: Security
Severity: high
Priority: high
Assignee: security-response-team(a)redhat.com
Reporter: jwon(a)redhat.com
CC: 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,
gzaronikas(a)gmail.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,
jrokos(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,
pdelbell(a)redhat.com, peholase(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, sclewis(a)redhat.com,
scohen(a)redhat.com, slinaber(a)redhat.com,
smaestri(a)redhat.com, szappis(a)redhat.com,
tom.jenkinson(a)redhat.com, tzimanyi(a)redhat.com,
yborgess(a)redhat.com
Blocks: 2004799
Target Milestone: ---
Classification: Other
Apache Tomcat did not properly validate incoming TLS packets. When Tomcat was
configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted
packet could be used to trigger an infinite loop resulting in a denial of
service. This issue affects the version of Apache Tomcat 10.0.0-M1 to 10.0.2;
9.0.0-M1 to 9.0.43; 8.5.0 to 8.5.63.
Upstream commits:
Tomcat 10.0.4:
https://github.com/apache/tomcat/commit/34115fb3c83f6cd97772232316a492a4c...
Tomcat 9.0.44:
https://github.com/apache/tomcat/commit/d4b340fa8feaf55831f9a59350578f7b6...
Tomcat 8.5.64:
https://github.com/apache/tomcat/commit/b90d4fc1ff44f30e4b3aba622ba6677e3...
Reference:
https://lists.apache.org/thread.html/rccdef0349fdf4fb73a4e4403095446d7fe6...
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https://bugzilla.redhat.com/show_bug.cgi?id=2004820