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CVE-2020-24659

gnutls: Heap buffer overflow in handshake with no_renegotiation alert sent

An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutls_deinit function is called after detecting a handshake failure.

CVSS 3.1 · 7.5 High EPSS 3.8% KEV · Not listed
Vendors
Canonical Fedoraproject Gnu and 2 more
Products
Ubuntu Linux Fedora Gnutls and 2 more
CVE-2020-14422

python: DoS via inefficiency in IPv{4,6}Interface classes

Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2.

CVSS 3.1 · 5.9 Medium EPSS 12.7% KEV · Not listed
Vendors
Fedoraproject Opensuse Oracle and 2 more
Products
Fedora Leap Enterprise Manager Ops Center and 3 more
CVE-2020-13777

gnutls: session resumption works without master key allowing MITM

GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.

CVSS 3.1 · 7.4 High EPSS 22.5% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 2 more
Products
Ubuntu Linux Debian Linux Fedora and 4 more
CVE-2020-13776

systemd: Mishandles numerical usernames beginning with decimal digits or 0x followed by hexadecimal digits

systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Netapp Redhat and 1 more
Products
Fedora Active Iq Unified Manager Solidfire \& Hci Management Node and 3 more
CVE-2020-13631

sqlite: Virtual table can be renamed into the name of one of its shadow tables

SQLite before 3.32.0 allows a virtual table to be renamed to the name of one of its shadow tables, related to alter.c and build.c.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Apple Broadcom Canonical and 6 more
Products
Icloud Ipados Iphone Os and 17 more
CVE-2020-13630

sqlite: Use-after-free in fts3EvalNextRow in ext/fts3/fts3.c

ext/fts3/fts3.c in SQLite before 3.32.0 has a use-after-free in fts3EvalNextRow, related to the snippet feature.

CVSS 3.1 · 7.0 High EPSS 1.0% KEV · Not listed
Vendors
Apple Broadcom Canonical and 7 more
Products
Icloud Ipados Iphone Os and 18 more
CVE-2020-13529

systemd: DHCP FORCERENEW authentication not implemented can cause a system running the DHCP client to have its network reconfigured

An exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An attacker can forge a pair of FORCERENEW and DCHP ACK packets to reconfigure the server.

CVSS 3.1 · 6.1 Medium EPSS 1.4% KEV · Not listed
Vendors
Fedoraproject Netapp Redhat and 1 more
Products
Fedora Active Iq Unified Manager Cloud Backup and 2 more
CVE-2020-13434

sqlite: integer overflow in sqlite3_str_vappendf function in printf.c

SQLite through 3.32.0 has an integer overflow in sqlite3_str_vappendf in printf.c.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Apple Canonical Debian and 5 more
Products
Icloud Ipados Iphone Os and 13 more
CVE-2020-8492

python: wrong backtracking in urllib.request.AbstractBasicAuthHandler allows for a ReDoS

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.

CVSS 3.1 · 6.5 Medium EPSS 6.6% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 3 more
Products
Ubuntu Linux Debian Linux Fedora and 4 more
CVE-2020-8286

curl: Inferior OCSP verification

curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response.

CVSS 3.1 · 7.5 High EPSS 4.6% KEV · Not listed
Vendors
Apple Debian Fedoraproject and 6 more
Products
Mac Os X Macos Debian Linux and 19 more
CVE-2020-8285

curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used

curl 7.21.0 to and including 7.73.0 is vulnerable to uncontrolled recursion due to a stack overflow issue in FTP wildcard match parsing.

CVSS 3.1 · 7.5 High EPSS 9.8% KEV · Not listed
Vendors
Apple Debian Fedoraproject and 7 more
Products
Mac Os X Macos Debian Linux and 29 more
CVE-2020-8284

curl: FTP PASV command response can cause curl to connect to arbitrary host

A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to a given IP address and port, and this way potentially make curl extract information about services that are otherwise private and not disclosed, for example doing port scanning and service banner extractions.

CVSS 3.1 · 3.7 Low EPSS 3.9% KEV · Not listed
Vendors
Apple Debian Fedoraproject and 7 more
Products
Mac Os X Macos Debian Linux and 28 more
CVE-2020-11501

gnutls: DTLS client hello contains a random value of all zeroes

GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.

CVSS 3.1 · 7.4 High EPSS 3.4% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 3 more
Products
Ubuntu Linux Debian Linux Fedora and 3 more
CVE-2020-10878

perl: corruption of intermediate language state of compiled regular expression due to integer overflow leads to DoS

Perl before 5.30.3 has an integer overflow related to mishandling of a "PL_regkind[OP(n)] == NOTHING" situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction injection.

CVSS 3.1 · 8.6 High EPSS 4.9% KEV · Not listed
Vendors
Fedoraproject Netapp Opensuse and 3 more
Products
Fedora Oncommand Workflow Automation Snap Creator Framework and 19 more
CVE-2020-10735

python: int() type in PyLong_FromString() does not limit amount of digits converting text to int leading to DoS

A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when using int("text"), a system could take 50ms to parse an int string with 100,000 digits and 5s for 1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not affected). The highest threat from this vulnerability is to system availability.

CVSS 3.1 · 6.2 Medium EPSS 4.5% KEV · Not listed
Vendors
Fedoraproject Python Redhat
Products
Fedora Python Enterprise Linux and 4 more