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CVE-2021-33929

libsolv: heap-based buffer overflow in pool_disabled_solvable() in src/repo.h

Buffer overflow vulnerability in function pool_disabled_solvable in src/repo.h in libsolv before 0.7.17 allows attackers to cause a Denial of Service.

CVSS 3.1 · 7.5 High EPSS 1.4% KEV · Not listed
Vendors
Opensuse Redhat
Products
Libsolv Enterprise Linux Satellite and 1 more
CVE-2021-33928

libsolv: heap-based buffer overflow in pool_installable() in src/repo.h

Buffer overflow vulnerability in function pool_installable in src/repo.h in libsolv before 0.7.17 allows attackers to cause a Denial of Service.

CVSS 3.1 · 7.5 High EPSS 1.5% KEV · Not listed
Vendors
Opensuse Redhat
Products
Libsolv Enterprise Linux Satellite and 1 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-2021-33620

squid: denial of service in HTTP response processing

Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server.

CVSS 3.1 · 6.5 Medium EPSS 79.6% KEV · Not listed
Vendors
Debian Fedoraproject Redhat and 1 more
Products
Debian Linux Fedora Enterprise Linux and 1 more
CVE-2021-33582

cyrus-imapd: Denial of service via string hashing algorithm collisions

Cyrus IMAP before 3.4.2 allows remote attackers to cause a denial of service (multiple-minute daemon hang) via input that is mishandled during hash-table interaction. Because there are many insertions into a single bucket, strcmp becomes slow. This is fixed in 3.4.2, 3.2.8, and 3.0.16.

CVSS 3.1 · 7.5 High EPSS 3.1% KEV · Not listed
Vendors
Cyrus Debian Fedoraproject and 1 more
Products
Imap Debian Linux Fedora and 2 more
CVE-2021-33516

gupnp: allows DNS rebinding which could result in tricking browser into triggering actions against local UPnP services

An issue was discovered in GUPnP before 1.0.7 and 1.1.x and 1.2.x before 1.2.5. It allows DNS rebinding. A remote web server can exploit this vulnerability to trick a victim's browser into triggering actions against local UPnP services implemented using this library. Depending on the affected service, this could be used for data exfiltration, data tempering, etc.

CVSS 3.1 · 8.1 High EPSS 1.1% KEV · Not listed
Vendors
Gnome Redhat
Products
Gupnp Enterprise Linux Rhel Eus
CVE-2021-33515

dovecot: plaintext commands injection

The submission service in Dovecot before 2.3.15 allows STARTTLS command injection in lib-smtp. Sensitive information can be redirected to an attacker-controlled address.

CVSS 3.1 · 4.8 Medium EPSS 2.9% KEV · Not listed
Vendors
Debian Dovecot Fedoraproject and 1 more
Products
Debian Linux Dovecot Fedora and 1 more
CVE-2021-33503

python-urllib3: ReDoS in the parsing of authority part of URL

An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.

CVSS 3.1 · 7.5 High EPSS 3.3% KEV · Not listed
Vendors
Fedoraproject Oracle Python and 1 more
Products
Fedora Enterprise Manager Ops Center Instantis Enterprisetrack and 7 more
CVE-2021-33502

nodejs-normalize-url: ReDoS for data URLs

The normalize-url package before 4.5.1, 5.x before 5.3.1, and 6.x before 6.0.1 for Node.js has a ReDoS (regular expression denial of service) issue because it has exponential performance for data: URLs.

CVSS 3.1 · 7.5 High EPSS 1.7% KEV · Not listed
Vendors
Normalize-url Project Redhat
Products
Normalize-url Acm Enterprise Linux and 3 more
CVE-2021-33200

kernel: out-of-bounds reads and writes due to enforcing incorrect limits for pointer arithmetic operations by BPF verifier

kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Linux Netapp and 1 more
Products
Fedora Linux Kernel Cloud Backup and 17 more
CVE-2021-33197

golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty

In Go before 1.15.13 and 1.16.x before 1.16.5, some configurations of ReverseProxy (from net/http/httputil) result in a situation where an attacker is able to drop arbitrary headers.

CVSS 3.1 · 5.3 Medium EPSS 2.3% KEV · Not listed
Vendors
Golang Redhat
Products
Go Advanced Cluster Security Container Native Virtualization and 8 more
CVE-2021-33196

golang: archive/zip: malformed archive may cause panic or memory exhaustion

In archive/zip in Go before 1.15.13 and 1.16.x before 1.16.5, a crafted file count (in an archive's header) can cause a NewReader or OpenReader panic.

CVSS 3.1 · 7.5 High EPSS 3.5% KEV · Not listed
Vendors
Debian Golang Redhat
Products
Debian Linux Go Devtools and 5 more
CVE-2021-33195

golang: net: lookup functions may return invalid host names

Go before 1.15.13 and 1.16.x before 1.16.5 has functions for DNS lookups that do not validate replies from DNS servers, and thus a return value may contain an unsafe injection (e.g., XSS) that does not conform to the RFC1035 format.

CVSS 3.1 · 7.3 High EPSS 3.2% KEV · Not listed
Vendors
Golang Netapp Redhat
Products
Go Cloud Insights Telegraf Agent Advanced Cluster Security and 9 more
CVE-2021-33098

kernel: Improper input validation in the Intel(R) Ethernet ixgbe driver may allow an authenticated user to potentially enable DoS via local access

Improper input validation in the Intel(R) Ethernet ixgbe driver for Linux before version 3.17.3 may allow an authenticated user to potentially enable denial of service via local access.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Intel Redhat
Products
Ethernet 500 Series Controllers Driver Ethernet Connection X540 Ethernet Connection X550 and 2 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-2021-33033

kernel: use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c

The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel Extras Rt
CVE-2021-32810

Data race in crossbeam-deque

crossbeam-deque is a package of work-stealing deques for building task schedulers when programming in Rust. In versions prior to 0.7.4 and 0.8.0, the result of the race condition is that one or more tasks in the worker queue can be popped twice instead of other tasks that are forgotten and never popped. If tasks are allocated on the heap, this can cause double free and a memory leak. If not, this still can cause a logical bug. Crates using `Stealer::steal`, `Stealer::steal_batch`, or `Stealer::steal_batch_and_pop` are affected by this issue. This has been fixed in crossbeam-deque 0.8.1 and 0.7.4.

CVSS 3.1 · 9.8 Critical EPSS 1.9% KEV · Not listed
Vendors
Crossbeam Project Fedoraproject Redhat
Products
Crossbeam Fedora Enterprise Linux and 1 more
CVE-2021-32804

Arbitrary File Creation/Overwrite due to insufficient absolute path sanitization

The npm package "tar" (aka node-tar) before versions 6.1.1, 5.0.6, 4.4.14, and 3.3.2 has a arbitrary File Creation/Overwrite vulnerability due to insufficient absolute path sanitization. node-tar aims to prevent extraction of absolute file paths by turning absolute paths into relative paths when the `preservePaths` flag is not set to `true`. This is achieved by stripping the absolute path root from any absolute file paths contained in a tar file. For example `/home/user/.bashrc` would turn into `home/user/.bashrc`. This logic was insufficient when file paths contained repeated path roots such as `////home/user/.bashrc`. `node-tar` would only strip a single path root from such paths. When given an absolute file path with repeating path roots, the resulting path (e.g. `///home/user/.bashrc`) would still resolve to an absolute path, thus allowing arbitrary file creation and overwrite. This issue was addressed in releases 3.2.2, 4.4.14, 5.0.6 and 6.1.1. Users may work around this vulnerability without upgrading by creating a custom `onentry` method which sanitizes the `entry.path` or a `filter` method which removes entries with absolute paths. See referenced GitHub Advisory for details. Be aware of CVE-2021-32803 which fixes a similar bug in later versions of tar.

CVSS 3.1 · 8.2 High EPSS 15.1% KEV · Not listed
Vendors
Oracle Redhat Siemens and 1 more
Products
Graalvm Acm Enterprise Linux and 5 more