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CVE-2021-40839

The rencode package through 1.0.6 for Python allows an infinite loop in typecode decoding (such as via ;\x2f\x7f), enabling a remote attack that consumes CPU and memory.

CVSS 3.1 · 7.5 High EPSS 5.5% KEV · Not listed
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CVE-2021-40530

The ElGamal implementation in Crypto++ through 8.5 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

CVSS 3.1 · 5.9 Medium EPSS 1.2% KEV · Not listed
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CVE-2021-40529

The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

CVSS 3.1 · 5.9 Medium EPSS 1.5% KEV · Not listed
CVE-2021-40391

An out-of-bounds write vulnerability exists in the drill format T-code tool number functionality of Gerbv 2.7.0, dev (commit b5f1eacd), and the forked version of Gerbv (commit 71493260). A specially-crafted drill file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

CVSS 3.1 · 9.8 Critical EPSS 3.0% KEV · Not listed
CVE-2021-40346

haproxy: request smuggling attack or response splitting via duplicate content-length header

An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request smuggling attack, allowing an attacker to bypass all configured http-request HAProxy ACLs and possibly other ACLs.

CVSS 3.1 · 7.5 High EPSS 58.8% KEV · Not listed
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CVE-2021-40153

squashfs-tools: unvalidated filepaths allow writing outside of destination

squashfs_opendir in unsquash-1.c in Squashfs-Tools 4.5 stores the filename in the directory entry; this is then used by unsquashfs to create the new file during the unsquash. The filename is not validated for traversal outside of the destination directory, and thus allows writing to locations outside of the destination.

CVSS 3.1 · 8.1 High EPSS 2.5% KEV · Not listed
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CVE-2021-3996

util-linux: Unauthorized unmount of filesystems in libmount

A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows a local user on a vulnerable system to unmount other users' filesystems that are either world-writable themselves (like /tmp) or mounted in a world-writable directory. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-3995

util-linux: Unauthorized unmount of FUSE filesystems belonging to users with similar uid

A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-3975

libvirt: segmentation fault during VM shutdown can lead to vdsm hang

A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

CVSS 3.1 · 6.5 Medium EPSS 1.7% KEV · Not listed
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CVE-2021-3941

openexr: Divide-by-zero in Imf_3_1::RGBtoXYZ

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as `float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y;` and `chroma.green.y * (X + Z))) / d;` but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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CVE-2021-3933

openexr: Integer-overflow in Imf_3_1::bytesPerDeepLineTable

An integer overflow could occur when OpenEXR processes a crafted file on systems where size_t < 64 bits. This could cause an invalid bytesPerLine and maxBytesPerLine value, which could lead to problems with application stability or lead to other attack paths.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
CVE-2021-3905

openvswitch: External triggered memory leak in Open vSwitch while processing fragmented packets

A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing. An attacker could use this flaw to potentially exhaust available memory by keeping sending packet fragments.

CVSS 3.1 · 7.5 High EPSS 2.2% KEV · Not listed
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CVE-2021-3847

kernel: low-privileged user privileges escalation

An unauthorized access to the execution of the setuid file with capabilities flaw in the Linux kernel OverlayFS subsystem was found in the way user copying a capable file from a nosuid mount into another mount. A local user could use this flaw to escalate their privileges on the system.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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CVE-2021-3839

DPDK: out-of-bounds read/write in vhost_user_set_inflight_fd() may lead to crash

A flaw was found in the vhost library in DPDK. Function vhost_user_set_inflight_fd() does not validate `msg->payload.inflight.num_queues`, possibly causing out-of-bounds memory read/write. Any software using DPDK vhost library may crash as a result of this vulnerability.

CVSS 3.1 · 7.5 High EPSS 1.8% KEV · Not listed
CVE-2021-3802

udisks2: insecure defaults in user-accessible mount helpers allow for a DoS

A vulnerability found in udisks2. This flaw allows an attacker to input a specially crafted image file/USB leading to kernel panic. The highest threat from this vulnerability is to system availability.

CVSS 3.1 · 4.2 Medium EPSS < 1% KEV · Not listed