USN-4726-1: openjdk-8 Ubuntu
CVSS: UnknownPublished
Published 09-02-2021Last modified 10-02-2026
Vulnerability summary
USN-4726-1 is a vulnerability in openjdk-8 Ubuntu with no CVSS score yet.
CVSS score
Not scored
010
No CVSS score recordedEPSS score
Not scored
0%100%
No EPSS score yetKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 09-02-2021PublishedVulnerability first disclosed.
- 10-02-2026Last modifiedVulnerability information updated.
Description
openjdk-8, openjdk-lts vulnerability It was discovered that OpenJDK incorrectly handled the direct buffering of characters. An attacker could use this issue to cause OpenJDK to crash, resulting in a denial of service, or cause other unspecified impact.
CVSS metrics
Risk metrics not yet published.
EPSS trend
No EPSS score has been published for this record yet.
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu2 products
- openjdk-8< 8u282-b08-0ubuntu1~16.04 | < 8u282-b08-0ubuntu1~18.04 | < 8u282-b08-0ubuntu1~20.04
- openjdk-lts< 11.0.10+9-0ubuntu1~18.04 | < 11.0.10+9-0ubuntu1~20.04
1 vendor · 2 products
References
2 linksRelated vulnerabilities
USN-5719-1ubuntuopenjdk-17+3openjdk-8, openjdk-lts, openjdk-17, openjdk-19 vulnerabilities
It was discovered that OpenJDK incorrectly handled long client hostnames.
An attacker could possibly use this issue to cause the corruption of
sensitive information. (CVE-2022-21619)
It was discovered that OpenJDK incorrectly randomized DNS port numbers. A
remote attacker could possibly use this issue to perform spoofing attacks.
(CVE-2022-21624)
It was discovered that OpenJDK did not limit the number of connections
accepted from HTTP clients. An attacker could possibly use this issue to
cause a denial of service. (CVE-2022-21628)
It was discovered that OpenJDK incorrectly handled X.509 certificates. An
attacker could possibly use this issue to cause a denial of service. This
issue only affected OpenJDK 8 and OpenJDK 11. (CVE-2022-21626)
It was discovered that OpenJDK incorrectly handled cached server
connections. An attacker could possibly use this issue to perform spoofing
attacks. This issue only affected OpenJDK 11, OpenJDK 17 and OpenJDK 19.
(CVE-2022-39399)
It was discovered that OpenJDK incorrectly handled byte conversions. An
attacker could possibly use this issue to obtain sensitive information.
This issue only affected OpenJDK 11, OpenJDK 17 and OpenJDK 19.
(CVE-2022-21618)USN-5313-2ubuntuopenjdk-ltsopenjdk-lts regression
USN-5313-1 fixed vulnerabilities and added features in OpenJDK.
Unfortunately, that update introduced a regression in OpenJDK 11 that
could impact interoperability with some popular HTTP/2 servers making
it unable to connect to said servers. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that OpenJDK incorrectly handled deserialization filters.
An attacker could possibly use this issue to insert, delete or obtain
sensitive information. (CVE-2022-21248)
It was discovered that OpenJDK incorrectly read uncompressed TIFF files.
An attacker could possibly use this issue to cause a denial of service via
a specially crafted TIFF file. (CVE-2022-21277)
Jonni Passki discovered that OpenJDK incorrectly verified access
restrictions when performing URI resolution. An attacker could possibly
use this issue to obtain sensitive information. (CVE-2022-21282)
It was discovered that OpenJDK incorrectly handled certain regular
expressions in the Pattern class implementation. An attacker could
possibly use this issue to cause a denial of service. (CVE-2022-21283)
It was discovered that OpenJDK incorrectly handled specially crafted Java
class files. An attacker could possibly use this issue to cause a denial
of service. (CVE-2022-21291)
Markus Loewe discovered that OpenJDK incorrectly validated attributes
during object deserialization. An attacker could possibly use this issue
to cause a denial of service. (CVE-2022-21293, CVE-2022-21294)
Dan Rabe discovered that OpenJDK incorrectly verified access permissions
in the JAXP component. An attacker could possibly use this to specially
craft an XML file to obtain sensitive information. (CVE-2022-21296)
It was discovered that OpenJDK incorrectly handled XML entities. An
attacker could use this to specially craft an XML file that, when parsed,
would possibly cause a denial of service. (CVE-2022-21299)
Zhiqiang Zang discovered that OpenJDK incorrectly handled array indexes.
An attacker could possibly use this issue to obtain sensitive information.
(CVE-2022-21305)
It was discovered that OpenJDK incorrectly read very long attributes
values in JAR file manifests. An attacker could possibly use this to
specially craft JAR file to cause a denial of service. (CVE-2022-21340)
It was discovered that OpenJDK incorrectly validated input from serialized
streams. An attacker cold possibly use this issue to bypass sandbox
restrictions. (CVE-2022-21341)
Fabian Meumertzheim discovered that OpenJDK incorrectly handled certain
specially crafted BMP or TIFF files. An attacker could possibly use this
to cause a denial of service. (CVE-2022-21360, CVE-2022-21366)
It was discovered that an integer overflow could be triggered in OpenJDK
BMPImageReader class implementation. An attacker could possibly use this
to specially craft a BMP file to cause a denial of service.
(CVE-2022-21365)USN-5202-1ubuntuopenjdk-8+1openjdk-8, openjdk-lts vulnerabilities
Varnavas Papaioannou discovered that the FTP client implementation in
OpenJDK accepted alternate server IP addresses when connecting with FTP
passive mode. An attacker controlling an FTP server that an application
connects to could possibly use this to expose sensitive information
(rudimentary port scans). This issue only affected Ubuntu 16.04 ESM,
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 21.04. (CVE-2021-2341)
Markus Loewe discovered that OpenJDK did not properly handle JAR files
containing multiple manifest files. An attacker could possibly use
this to bypass JAR signature verification. This issue only affected
Ubuntu 16.04 ESM, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu
21.04. (CVE-2021-2369)
Huixin Ma discovered that the Hotspot VM in OpenJDK did not properly
perform range check elimination in some situations. An attacker could
possibly use this to construct a Java class that could bypass Java
sandbox restrictions. This issue only affected Ubuntu 16.04 ESM,
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 21.04. (CVE-2021-2388)
Asaf Greenholts discovered that OpenJDK preferred certain weak ciphers by
default. An attacker could possibly use this to expose sensitive
information. (CVE-2021-35550)
It was discovered that the Rich Text Format (RTF) Parser in OpenJDK did not
properly restrict the amount of memory allocated in some situations. An
attacker could use this to specially craft an RTF file that caused a denial
of service. (CVE-2021-35556)
It was discovered that the Rich Text Format (RTF) Reader in OpenJDK did not
properly restrict the amount of memory allocated in some situations. An
attacker could use this to specially craft an RTF file that caused a denial
of service. (CVE-2021-35559)
Markus Loewe discovered that the HashMap and HashSet implementations in
OpenJDK did not properly validate load factors during deserialization. An
attacker could use this to cause a denial of service (excessive memory
consumption). (CVE-2021-35561)
It was discovered that the Keytool component in OpenJDK did not properly
handle certificates with validity ending dates in the far future. An
attacker could use this to specially craft a certificate that when imported
could corrupt a keystore. (CVE-2021-35564)
Tristen Hayfield discovered that the HTTP server implementation in OpenJDK
did not properly handle TLS session close in some situations. A remote
attacker could possibly use this to cause a denial of service (application
infinite loop). (CVE-2021-35565)
Chuck Hunley discovered that the Kerberos implementation in OpenJDK did not
correctly report subject principals when using Kerberos Constrained
Delegation. An attacker could possibly use this to cause incorrect Kerberos
tickets to be used. (CVE-2021-35567)
it was discovered that the TLS implementation in OpenJDK did not properly
handle TLS handshakes in certain situations where a Java application is
acting as a TLS server. A remote attacker could possibly use this to cause
a denial of service (application crash). (CVE-2021-35578)
it was discovered that OpenJDK did not properly restrict the amount of
memory allocated when processing BMP images. An attacker could use this to
specially craft a BMP image file that could cause a denial of service.
(CVE-2021-35586)
It was discovered that the HotSpot VM in OpenJDK 8 did not properly perform
validation of inner class index values in some situations. An attacker
could use this to specially craft a class file that when loaded could cause
a denial of service (Java VM crash). (CVE-2021-35588)
Artem Smotrakov discovered that the TLS implementation in OpenJDK used non-
constant time comparisons during TLS handshakes. A remote attacker could
use this to expose sensitive information. (CVE-2021-35603)USN-4607-2ubuntuopenjdk-8+1openjdk-8, openjdk-lts regressions
USN-4607-1 fixed vulnerabilities and added features in OpenJDK.
Unfortunately, that update introduced a regression that could cause TLS
connections with client certificate authentication to fail in some
situations. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that OpenJDK incorrectly handled deserializing Proxy
class objects with many interfaces. A remote attacker could possibly use
this issue to cause a denial of service (memory consumption) via a
specially crafted input. (CVE-2020-14779)
Sergey Ostanin discovered that OpenJDK incorrectly restricted
authentication mechanisms. A remote attacker could possibly use this
issue to obtain sensitive information over an unencrypted connection.
(CVE-2020-14781)
It was discovered that OpenJDK incorrectly handled untrusted certificates.
An attacker could possibly use this issue to read or write sensitive
information. (CVE-2020-14782)
Zhiqiang Zang discovered that OpenJDK incorrectly checked for integer
overflows. An attacker could possibly use this issue to bypass certain
Java sandbox restrictions. (CVE-2020-14792)
Markus Loewe discovered that OpenJDK incorrectly checked permissions when
converting a file system path to an URI. An attacker could possibly use
this issue to bypass certain Java sandbox restrictions. (CVE-2020-14796)
Markus Loewe discovered that OpenJDK incorrectly checked for invalid
characters when converting an URI to a path. An attacker could possibly
use this issue to read or write sensitive information. (CVE-2020-14797)
Markus Loewe discovered that OpenJDK incorrectly checked the length of
input strings. An attacker could possibly use this issue to bypass certain
Java sandbox restrictions. (CVE-2020-14798)
It was discovered that OpenJDK incorrectly handled boundary checks. An
attacker could possibly use this issue to bypass certain Java sandbox
restrictions. (CVE-2020-14803)USN-4433-1ubuntuopenjdk-ltsopenjdk-lts vulnerabilities
Johannes Kuhn discovered that OpenJDK incorrectly handled access control
contexts. An attacker could possibly use this issue to execute arbitrary
code. (CVE-2020-14556)
It was discovered that OpenJDK incorrectly handled memory allocation when
reading TIFF image files. An attacker could possibly use this issue to
cause a denial of service. (CVE-2020-14562)
It was discovered that OpenJDK incorrectly handled input data. An
attacker could possibly use this issue to insert, edit or obtain
sensitive information. (CVE-2020-14573)
Philippe Arteau discovered that OpenJDK incorrectly verified names in
TLS server's X.509 certificates. An attacker could possibly use this
issue to obtain sensitive information. (CVE-2020-14577)
It was discovered that OpenJDK incorrectly handled image files. An
attacker could possibly use this issue to obtain sensitive information.
(CVE-2020-14581)
Markus Loewe discovered that OpenJDK incorrectly handled concurrent
access in java.nio.Buffer class. An attacker could use this issue to
bypass the sandbox restrictions and cause unspecified impact.
(CVE-2020-14583)
It was discovered that OpenJDK incorrectly handled transformation of
images. An attacker could possibly use this issue to bypass sandbox
restrictions and insert, edit or obtain sensitive information.
(CVE-2020-14593)
Roman Shemyakin discovered that OpenJDK incorrectly handled XML files.
An attacker could possibly use this issue to insert, edit or obtain
sensitive information. (CVE-2020-14621)USN-4337-1ubuntuopenjdk-8+1openjdk-8, openjdk-lts vulnerabilities
It was discovered that OpenJDK incorrectly handled certain regular
expressions. An attacker could possibly use this issue to cause a denial of
service while processing a specially crafted regular expression.
(CVE-2020-2754, CVE-2020-2755)
It was discovered that OpenJDK incorrectly handled class descriptors and
catching exceptions during object stream deserialization. An attacker could
possibly use this issue to cause a denial of service while processing a
specially crafted serialized input. (CVE-2020-2756, CVE-2020-2757)
Bengt Jonsson, Juraj Somorovsky, Kostis Sagonas, Paul Fiterau Brostean and
Robert Merget discovered that OpenJDK incorrectly handled certificate messages
during TLS handshake. An attacker could possibly use this issue to bypass
certificate verification and insert, edit or obtain sensitive information. This
issue only affected OpenJDK 11. (CVE-2020-2767)
It was discovered that OpenJDK incorrectly handled exceptions thrown by
unmarshalKeyInfo() and unmarshalXMLSignature(). An attacker could possibly use
this issue to cause a denial of service while reading key info or XML signature
data from XML input. (CVE-2020-2773)
Peter Dettman discovered that OpenJDK incorrectly handled SSLParameters in
setAlgorithmConstraints(). An attacker could possibly use this issue to
override the defined systems security policy and lead to the use of weak
crypto algorithms that should be disabled. This issue only affected
OpenJDK 11. (CVE-2020-2778)
Simone Bordet discovered that OpenJDK incorrectly re-used single null TLS
sessions for new TLS connections. A remote attacker could possibly use this
issue to cause a denial of service. (CVE-2020-2781)
Dan Amodio discovered that OpenJDK did not restrict the use of CR and LF
characters in values for HTTP headers. An attacker could possibly use this
issue to insert, edit or obtain sensitive information. (CVE-2020-2800)
Nils Emmerich discovered that OpenJDK incorrectly checked boundaries or
argument types. An attacker could possibly use this issue to bypass sandbox
restrictions causing unspecified impact. (CVE-2020-2803, CVE-2020-2805)
It was discovered that OpenJDK incorrectly handled application data packets
during TLS handshake. An attacker could possibly use this issue to insert,
edit or obtain sensitive information. This issue only affected OpenJDK 11.
(CVE-2020-2816)
It was discovered that OpenJDK incorrectly handled certain regular
expressions. An attacker could possibly use this issue to cause a denial of
service. (CVE-2020-2830)