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CVE-2021-3711

SM2 Decryption Buffer Overflow

In order to decrypt SM2 encrypted data an application is expected to call the API function EVP_PKEY_decrypt(). Typically an application will call this function twice. The first time, on entry, the "out" parameter can be NULL and, on exit, the "outlen" parameter is populated with the buffer size required to hold the decrypted plaintext. The application can then allocate a sufficiently sized buffer and call EVP_PKEY_decrypt() again, but this time passing a non-NULL value for the "out" parameter. A bug in the implementation of the SM2 decryption code means that the calculation of the buffer size required to hold the plaintext returned by the first call to EVP_PKEY_decrypt() can be smaller than the actual size required by the second call. This can lead to a buffer overflow when EVP_PKEY_decrypt() is called by the application a second time with a buffer that is too small. A malicious attacker who is able present SM2 content for decryption to an application could cause attacker chosen data to overflow the buffer by up to a maximum of 62 bytes altering the contents of other data held after the buffer, possibly changing application behaviour or causing the application to crash. The location of the buffer is application dependent but is typically heap allocated. Fixed in OpenSSL 1.1.1l (Affected 1.1.1-1.1.1k).

CVSS 3.1 · 9.8 Critical EPSS 87.8% KEV · Not listed
Vendors
Debian Netapp Openssl and 3 more
CVE-2021-3655

kernel: missing size validations on inbound SCTP packets

A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory.

CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
Vendors
CVE-2021-38199

kernel: incorrect connection-setup ordering allows operators of remote NFSv4 servers to cause a DoS

fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection.

CVSS 3.1 · 6.5 Medium EPSS 1.2% KEV · Not listed
Vendors
CVE-2021-38198

kernel: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page

arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
CVE-2021-38166

kernel: integer overflow and out-of-bounds write in kernel/bpf/hashtab.c when many elements are placed in a single bucket

In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
CVE-2021-35477

kernel: BPF program can obtain sensitive information from kernel memory via a speculative store bypass side-channel attack because the technique used by the BPF verifier to manage speculation is unreliable

In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
CVE-2021-34693

kernel: allows local users to obtain sensitive information from stack memory because of uninitialized data structure in net/can/bcm.c

net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
CVE-2021-34556

kernel: BPF program can obtain sensitive information from kernel memory via a speculative store bypass side-channel attack because of the possibility of uninitialized memory locations on the BPF stack

In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
CVE-2021-33624

kernel: Linux kernel BPF protection against speculative execution attacks can be bypassed to read arbitrary kernel memory

In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
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
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
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
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
CVE-2020-3702

kernel: ath9k: information disclosure via specifically timed and handcrafted traffic

u'Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set of traffic' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking in APQ8053, IPQ4019, IPQ8064, MSM8909W, MSM8996AU, QCA9531, QCN5502, QCS405, SDX20, SM6150, SM7150

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Products
Access Point Av2 C-75 and 27 more
CVE-2020-36311

kernel: DoS by triggering destruction of a large SEV VM

An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
CVE-2020-36189

jackson-databind: mishandles the interaction between serialization gadgets and typing, related to com.newrelic.agent.deps.ch.qos.logback.core.db.DriverManagerConnectionSource

FasterXML jackson-databind 2.x before 2.9.10.8 mishandles the interaction between serialization gadgets and typing, related to com.newrelic.agent.deps.ch.qos.logback.core.db.DriverManagerConnectionSource.

CVSS 3.1 · 8.1 High EPSS 4.0% KEV · Not listed
Vendors
Debian Fasterxml Netapp and 2 more
CVE-2020-36188

jackson-databind: mishandles the interaction between serialization gadgets and typing, related to com.newrelic.agent.deps.ch.qos.logback.core.db.JNDIConnectionSource

FasterXML jackson-databind 2.x before 2.9.10.8 mishandles the interaction between serialization gadgets and typing, related to com.newrelic.agent.deps.ch.qos.logback.core.db.JNDIConnectionSource.

CVSS 3.1 · 8.1 High EPSS 8.8% KEV · Not listed
Vendors
Debian Fasterxml Netapp and 2 more