Search vulnerabilities

Use the Query Builder to create your own search query, or check out the documentation to learn the search syntax.

Results 1,902

Export CSV
CVE-2021-3653

kernel: SVM nested virtualization issue in KVM (AVIC support)

A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "int_ctl" field, this issue could allow a malicious L1 to enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. This flaw affects Linux kernel versions prior to 5.14-rc7.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Debian Linux Redhat
Products
Debian Linux Linux Kernel Enterprise Linux and 5 more
CVE-2021-37712

Arbitrary File Creation/Overwrite via insufficient symlink protection due to directory cache poisoning using symbolic links

The npm package "tar" (aka node-tar) before versions 4.4.18, 5.0.10, and 6.1.9 has an arbitrary file creation/overwrite and arbitrary code execution vulnerability. node-tar aims to guarantee that any file whose location would be modified by a symbolic link is not extracted. This is, in part, achieved by ensuring that extracted directories are not symlinks. Additionally, in order to prevent unnecessary stat calls to determine whether a given path is a directory, paths are cached when directories are created. This logic was insufficient when extracting tar files that contained both a directory and a symlink with names containing unicode values that normalized to the same value. Additionally, on Windows systems, long path portions would resolve to the same file system entities as their 8.3 "short path" counterparts. A specially crafted tar archive could thus include a directory with one form of the path, followed by a symbolic link with a different string that resolves to the same file system entity, followed by a file using the first form. By first creating a directory, and then replacing that directory with a symlink that had a different apparent name that resolved to the same entry in the filesystem, it was thus possible to bypass node-tar symlink checks on directories, essentially allowing an untrusted tar file to symlink into an arbitrary location and subsequently extracting arbitrary files into that location, thus allowing arbitrary file creation and overwrite. These issues were addressed in releases 4.4.18, 5.0.10 and 6.1.9. The v3 branch of node-tar has been deprecated and did not receive patches for these issues. If you are still using a v3 release we recommend you update to a more recent version of node-tar. If this is not possible, a workaround is available in the referenced GHSA-qq89-hq3f-393p.

CVSS 3.1 · 8.2 High EPSS 1.9% KEV · Not listed
Vendors
Debian Microsoft Npmjs and 3 more
Products
Debian Linux Windows Tar and 7 more
CVE-2021-37701

Arbitrary File Creation/Overwrite via insufficient symlink protection due to directory cache poisoning using symbolic links

The npm package "tar" (aka node-tar) before versions 4.4.16, 5.0.8, and 6.1.7 has an arbitrary file creation/overwrite and arbitrary code execution vulnerability. node-tar aims to guarantee that any file whose location would be modified by a symbolic link is not extracted. This is, in part, achieved by ensuring that extracted directories are not symlinks. Additionally, in order to prevent unnecessary stat calls to determine whether a given path is a directory, paths are cached when directories are created. This logic was insufficient when extracting tar files that contained both a directory and a symlink with the same name as the directory, where the symlink and directory names in the archive entry used backslashes as a path separator on posix systems. The cache checking logic used both `\` and `/` characters as path separators, however `\` is a valid filename character on posix systems. By first creating a directory, and then replacing that directory with a symlink, it was thus possible to bypass node-tar symlink checks on directories, essentially allowing an untrusted tar file to symlink into an arbitrary location and subsequently extracting arbitrary files into that location, thus allowing arbitrary file creation and overwrite. Additionally, a similar confusion could arise on case-insensitive filesystems. If a tar archive contained a directory at `FOO`, followed by a symbolic link named `foo`, then on case-insensitive file systems, the creation of the symbolic link would remove the directory from the filesystem, but _not_ from the internal directory cache, as it would not be treated as a cache hit. A subsequent file entry within the `FOO` directory would then be placed in the target of the symbolic link, thinking that the directory had already been created. These issues were addressed in releases 4.4.16, 5.0.8 and 6.1.7. The v3 branch of node-tar has been deprecated and did not receive patches for these issues. If you are still using a v3 release we recommend you update to a more recent version of node-tar. If this is not possible, a workaround is available in the referenced GHSA-9r2w-394v-53qc.

CVSS 3.1 · 8.2 High EPSS 3.3% KEV · Not listed
Vendors
Debian Npmjs Oracle and 2 more
Products
Debian Linux Tar Graalvm and 6 more
CVE-2021-37576

kernel: powerpc: KVM guest OS users can cause host OS memory corruption

arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Linux Redhat
Products
Fedora Linux Kernel Enterprise Linux and 4 more
CVE-2021-33909

kernel: size_t-to-int conversion vulnerability in the filesystem layer

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

CVSS 3.1 · 7.8 High EPSS 9.8% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 4 more
Products
Debian Linux Fedora Linux Kernel and 13 more
CVE-2021-33034

kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan

In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 1 more
Products
Debian Linux Fedora Linux Kernel and 8 more
CVE-2021-32066

ruby: StartTLS stripping vulnerability in Net::IMAP

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."

CVSS 3.1 · 7.4 High EPSS 2.9% KEV · Not listed
Vendors
Oracle Redhat Ruby-lang
Products
Jd Edwards Enterpriseone Tools Enterprise Linux Rhel E4s and 3 more
CVE-2021-31810

ruby: FTP PASV command response can cause Net::FTP to connect to arbitrary host

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).

CVSS 3.1 · 5.8 Medium EPSS 3.0% KEV · Not listed
Vendors
Debian Fedoraproject Oracle and 2 more
Products
Debian Linux Fedora Jd Edwards Enterpriseone Tools and 5 more
CVE-2021-2194

mysql: InnoDB unspecified vulnerability (CPU Apr 2021)

Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 5.7.33 and prior and 8.0.23 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1 · 4.9 Medium EPSS 2.3% KEV · Not listed
Vendors
Fedoraproject Mariadb Netapp and 2 more
Products
Fedora Mariadb Active Iq Unified Manager and 8 more
CVE-2021-2160

mysql: Server: Optimizer unspecified vulnerability (CPU Apr 2021)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.7.30 and prior and 8.0.17 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1 · 4.9 Medium EPSS 1.1% KEV · Not listed
Vendors
Netapp Oracle Redhat
Products
Active Iq Unified Manager Oncommand Insight Oncommand Workflow Automation and 6 more
CVE-2021-2144

mysql: Server: Parser unspecified vulnerability (CPU Apr 2021)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser). Supported versions that are affected are 5.7.29 and prior and 8.0.19 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in takeover of MySQL Server. CVSS 3.1 Base Score 7.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

CVSS 3.1 · 7.2 High EPSS 1.9% KEV · Not listed
Vendors
Mariadb Netapp Oracle and 1 more
Products
Mariadb Active Iq Unified Manager Oncommand Insight and 7 more
CVE-2021-2022

mysql: InnoDB unspecified vulnerability (CPU Jan 2021)

Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 5.6.50 and prior, 5.7.32 and prior and 8.0.22 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1 · 4.4 Medium EPSS 1.8% KEV · Not listed
Vendors
Fedoraproject Mariadb Netapp and 2 more
Products
Fedora Mariadb Oncommand Insight and 7 more
CVE-2021-2020

mysql: Server: Optimizer unspecified vulnerability (CPU Jan 2021)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.20 and prior. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1 · 6.5 Medium EPSS 2.8% KEV · Not listed
Vendors
Fedoraproject Netapp Oracle and 1 more
Products
Fedora Oncommand Insight Oncommand Workflow Automation and 6 more
CVE-2021-2019

mysql: Server: Security: Privileges unspecified vulnerability (CPU Jan 2021)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). Supported versions that are affected are 8.0.19 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL Server accessible data. CVSS 3.1 Base Score 2.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N).

CVSS 3.1 · 2.7 Low EPSS 1.7% KEV · Not listed
Vendors
Fedoraproject Netapp Oracle and 1 more
Products
Fedora Oncommand Insight Oncommand Workflow Automation and 6 more
CVE-2021-2016

mysql: Server: Optimizer unspecified vulnerability (CPU Jan 2021)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.19 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1 · 4.9 Medium EPSS 2.2% KEV · Not listed
Vendors
Fedoraproject Netapp Oracle and 1 more
Products
Fedora Oncommand Insight Oncommand Workflow Automation and 6 more
CVE-2021-2012

mysql: Server: Security: Privileges unspecified vulnerability (CPU Jan 2021)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). Supported versions that are affected are 8.0.20 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1 · 4.9 Medium EPSS 2.2% KEV · Not listed
Vendors
Fedoraproject Netapp Oracle and 1 more
Products
Fedora Oncommand Insight Oncommand Workflow Automation and 6 more
CVE-2021-2009

mysql: Server: Security: Roles unspecified vulnerability (CPU Jan 2021)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Roles). Supported versions that are affected are 8.0.19 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1 · 4.9 Medium EPSS 2.4% KEV · Not listed
Vendors
Fedoraproject Netapp Oracle and 1 more
Products
Fedora Oncommand Insight Oncommand Workflow Automation and 6 more