CVE-2020-17527

Apache Tomcat: Request header mix-up between HTTP/2 streams

While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests.

CVSS 3.1 · 7.5 High EPSS 24.6% KEV · Not listed

Vendors

Apache Debian Netapp and 2 more

Products

Tomcat Debian Linux Element Plug-in and 12 more

CVE-2020-13943

tomcat: Apache Tomcat HTTP/2 Request mix-up

If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.

CVSS 3.1 · 4.3 Medium EPSS 52.6% KEV · Not listed

Vendors

Apache Debian Oracle and 1 more

Products

Tomcat Debian Linux Instantis Enterprisetrack and 4 more

CVE-2020-13934

tomcat: OutOfMemoryException caused by HTTP/2 connection leak could lead to DoS

An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.

CVSS 3.1 · 7.5 High EPSS 64.1% KEV · Not listed

Vendors

Apache Canonical Debian and 4 more

Products

Tomcat Ubuntu Linux Debian Linux and 14 more

CVE-2020-11996

tomcat: specially crafted sequence of HTTP/2 requests can lead to DoS

A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.

CVSS 3.1 · 7.5 High EPSS 26.7% KEV · Not listed

Vendors

Apache Canonical Debian and 4 more

Products

Tomcat Ubuntu Linux Debian Linux and 8 more

CVE-2018-5407

openssl: Side-channel vulnerability on SMT/Hyper-Threading architectures (PortSmash)

Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'.

CVSS 3.1 · 4.7 Medium EPSS 3.4% KEV · Not listed

Vendors

Canonical Debian Nodejs and 4 more

Products

Ubuntu Linux Debian Linux Node.js and 20 more

CVE-2017-5645

log4j: Socket receiver deserialization vulnerability

In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.

CVSS 3.1 · 9.8 Critical EPSS 89.4% KEV · Not listed

Vendors

Apache Netapp Oracle and 1 more

Products

Log4j Oncommand Api Services Oncommand Insight and 83 more

CVE-2016-6797

tomcat: unrestricted access to global resources

The ResourceLinkFactory implementation in Apache Tomcat 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not limit web application access to global JNDI resources to those resources explicitly linked to the web application. Therefore, it was possible for a web application to access any global JNDI resource whether an explicit ResourceLink had been configured or not.

CVSS 3.1 · 7.5 High EPSS 8.1% KEV · Not listed

Vendors

Apache Canonical Debian and 3 more

Products

Tomcat Ubuntu Linux Debian Linux and 12 more

CVE-2016-6796

tomcat: security manager bypass via JSP Servlet config parameters

A malicious web application running on Apache Tomcat 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 was able to bypass a configured SecurityManager via manipulation of the configuration parameters for the JSP Servlet.

CVSS 3.1 · 7.5 High EPSS 8.3% KEV · Not listed

Vendors

Apache Canonical Debian and 3 more

Products

Tomcat Ubuntu Linux Debian Linux and 13 more

CVE-2016-5018

tomcat: security manager bypass via IntrospectHelper utility function

In Apache Tomcat 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 a malicious web application was able to bypass a configured SecurityManager via a Tomcat utility method that was accessible to web applications.

CVSS 3.1 · 9.1 Critical EPSS 10.3% KEV · Not listed

Vendors

Apache Canonical Debian and 3 more

Products

Tomcat Ubuntu Linux Debian Linux and 13 more

CVE-2016-0762

tomcat: timing attack in Realm implementation

The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.

CVSS 3.1 · 5.9 Medium EPSS 8.0% KEV · Not listed

Vendors

Apache Canonical Debian and 3 more

Products

Tomcat Ubuntu Linux Debian Linux and 13 more

CVE-2021-3450

CA certificate check bypass with X509_V_FLAG_X509_STRICT

The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j).

CVSS 3.1 · 7.4 High EPSS 18.3% KEV · Not listed

Vendors

Fedoraproject Freebsd Mcafee and 8 more

Products

Fedora Freebsd Web Gateway and 36 more

CVE-2021-30640

Auth weakness in JNDIRealm

A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0-M1 to 10.0.5; 9.0.0.M1 to 9.0.45; 8.5.0 to 8.5.65.

CVSS 3.1 · 6.5 Medium EPSS 9.9% KEV · Not listed

Vendors

Apache Debian Oracle and 1 more

Products

Tomcat Debian Linux Communications Cloud Native Core Policy and 7 more

CVE-2021-25329

Incomplete fix for CVE-2020-9484

The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously published prerequisites for CVE-2020-9484 and the previously published mitigations for CVE-2020-9484 also apply to this issue.

CVSS 3.1 · 7.0 High EPSS 9.5% KEV · Not listed

Vendors

Apache Debian Oracle and 1 more

Products

Tomcat Debian Linux Agile Product Lifecycle Management and 12 more

CVE-2021-24122

Apache Tomcat information disclosure

When serving resources from a network location using the NTFS file system, Apache Tomcat versions 10.0.0-M1 to 10.0.0-M9, 9.0.0.M1 to 9.0.39, 8.5.0 to 8.5.59 and 7.0.0 to 7.0.106 were susceptible to JSP source code disclosure in some configurations. The root cause was the unexpected behaviour of the JRE API File.getCanonicalPath() which in turn was caused by the inconsistent behaviour of the Windows API (FindFirstFileW) in some circumstances.

CVSS 3.1 · 5.9 Medium EPSS 22.9% KEV · Not listed

Vendors

Apache Debian Oracle and 1 more

Products

Tomcat Debian Linux Agile Product Lifecycle Management and 3 more

CVE-2020-9484

tomcat: deserialization flaw in session persistence storage leading to RCE

When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter="null" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.

CVSS 3.1 · 7.0 High EPSS 55.5% KEV · Not listed

Vendors

Apache Canonical Debian and 5 more

Products

Tomcat Ubuntu Linux Debian Linux and 27 more

CVE-2020-1935

tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling

In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.

CVSS 3.1 · 4.8 Medium EPSS 9.4% KEV · Not listed

Vendors

Apache Canonical Debian and 4 more

Products

Tomcat Ubuntu Linux Debian Linux and 22 more

CVE-2020-13935

tomcat: multiple requests with invalid payload length in a WebSocket frame could lead to DoS

The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.

CVSS 3.1 · 7.5 High EPSS 86.6% KEV · Not listed

Vendors

Apache Canonical Debian and 5 more

Products

Tomcat Ubuntu Linux Debian Linux and 20 more

CVE-2019-17563

tomcat: Session fixation when using FORM authentication

When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98 there was a narrow window where an attacker could perform a session fixation attack. The window was considered too narrow for an exploit to be practical but, erring on the side of caution, this issue has been treated as a security vulnerability.

CVSS 3.1 · 7.5 High EPSS 10.7% KEV · Not listed

Vendors

Apache Canonical Debian and 3 more

Products

Tomcat Ubuntu Linux Debian Linux and 11 more

CVE-2019-12418

tomcat: local privilege escalation

When Apache Tomcat 9.0.0.M1 to 9.0.28, 8.5.0 to 8.5.47, 7.0.0 and 7.0.97 is configured with the JMX Remote Lifecycle Listener, a local attacker without access to the Tomcat process or configuration files is able to manipulate the RMI registry to perform a man-in-the-middle attack to capture user names and passwords used to access the JMX interface. The attacker can then use these credentials to access the JMX interface and gain complete control over the Tomcat instance.

CVSS 3.1 · 7.0 High EPSS 1.2% KEV · Not listed

Vendors

Apache Canonical Debian and 4 more

Products

Tomcat Ubuntu Linux Debian Linux and 4 more

CVE-2016-3092

tomcat: Usage of vulnerable FileUpload package can result in denial of service

The MultipartStream class in Apache Commons Fileupload before 1.3.2, as used in Apache Tomcat 7.x before 7.0.70, 8.x before 8.0.36, 8.5.x before 8.5.3, and 9.x before 9.0.0.M7 and other products, allows remote attackers to cause a denial of service (CPU consumption) via a long boundary string.

CVSS 3.1 · 7.5 High EPSS 37.2% KEV · Not listed

Vendors

Apache Canonical Debian and 2 more

Products

Commons Fileupload Tomcat Ubuntu Linux and 6 more