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CVE-2018-0735

Timing attack against ECDSA signature generation

The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.1.1a (Affected 1.1.1).

CVSS 3.1 · 5.9 Medium EPSS 4.7% KEV · Not listed
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Canonical Debian Netapp and 4 more
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CVE-2018-0734

Timing attack against DSA

The OpenSSL DSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.1a (Affected 1.1.1). Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p).

CVSS 3.1 · 5.9 Medium EPSS 12.2% KEV · Not listed
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Canonical Debian Netapp and 4 more
Products
CVE-2017-15906

openssh: Improper write operations in readonly mode allow for zero-length file creation

The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.

CVSS 3.1 · 5.3 Medium EPSS 3.4% KEV · Not listed
Vendors
Debian Netapp Openbsd and 2 more
CVE-2018-15919

openssh: User enumeration via malformed packets in authentication requests

Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'

CVSS 3.1 · 5.3 Medium EPSS 3.5% KEV · Not listed
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CVE-2018-15473

openssh: User enumeration via malformed packets in authentication requests

OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.

CVSS 3.1 · 5.9 Medium EPSS 98.7% KEV · Not listed
Vendors
Canonical Debian Netapp and 4 more
CVE-2019-3843

systemd: services with DynamicUser can create SUID/SGID binaries

It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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Products
CVE-2019-3844

systemd: services with DynamicUser can get new privileges and create SGID binaries

It was discovered that a systemd service that uses DynamicUser property can get new privileges through the execution of SUID binaries, which would allow to create binaries owned by the service transient group with the setgid bit set. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the GID will be recycled.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Canonical Netapp Redhat and 1 more
Products
CVE-2018-20839

systemd: mishandling of the current keyboard mode check leading to passwords being disclosed in cleartext to attacker

systemd 242 changes the VT1 mode upon a logout, which allows attackers to read cleartext passwords in certain circumstances, such as watching a shutdown, or using Ctrl-Alt-F1 and Ctrl-Alt-F2. This occurs because the KDGKBMODE (aka current keyboard mode) check is mishandled.

CVSS 3.1 · 4.3 Medium EPSS 2.5% KEV · Not listed
Products
CVE-2016-8610

SSL/TLS: Malformed plain-text ALERT packets could cause remote DoS

A denial of service flaw was found in OpenSSL 0.9.8, 1.0.1, 1.0.2 through 1.0.2h, and 1.1.0 in the way the TLS/SSL protocol defined processing of ALERT packets during a connection handshake. A remote attacker could use this flaw to make a TLS/SSL server consume an excessive amount of CPU and fail to accept connections from other clients.

CVSS 3.1 · 7.5 High EPSS 39.9% KEV · Not listed
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Debian Fujitsu Netapp and 4 more
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CVE-2019-9162

kernel: out-of-bounds read/write in et/ipv4/netfilter/nf_nat_snmp_basic_main.c in the SNMP NAT module

In the Linux kernel before 4.20.12, net/ipv4/netfilter/nf_nat_snmp_basic_main.c in the SNMP NAT module has insufficient ASN.1 length checks (aka an array index error), making out-of-bounds read and write operations possible, leading to an OOPS or local privilege escalation. This affects snmp_version and snmp_helper.

CVSS 3.1 · 7.8 High EPSS 1.1% KEV · Not listed
Products
CVE-2019-9003

kernel: use-after-free and OOPS in drivers/char/ipmi/ipmi_msghandler.c

In the Linux kernel before 4.20.5, attackers can trigger a drivers/char/ipmi/ipmi_msghandler.c use-after-free and OOPS by arranging for certain simultaneous execution of the code, as demonstrated by a "service ipmievd restart" loop.

CVSS 3.1 · 7.5 High EPSS 4.8% KEV · Not listed
Vendors
Canonical Linux Netapp and 2 more
Products
CVE-2019-3901

kernel: perf_event_open() and execve() race in setuid programs allows a data leak

A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Linux Netapp and 1 more
CVE-2019-3900

Kernel: vhost_net: infinite loop while receiving packets leads to DoS

An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the vhost_net kernel thread, resulting in a DoS scenario.

CVSS 3.1 · 7.7 High EPSS 4.3% KEV · Not listed
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CVE-2019-3882

kernel: denial of service vector through vfio DMA mappings

A flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's locked memory limit. If a device is bound to a vfio driver, such as vfio-pci, and the local attacker is administratively granted ownership of the device, it may cause a system memory exhaustion and thus a denial of service (DoS). Versions 3.10, 4.14 and 4.18 are vulnerable.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2019-3874

kernel: SCTP socket buffer memory leak leading to denial of service

The SCTP socket buffer used by a userspace application is not accounted by the cgroups subsystem. An attacker can use this flaw to cause a denial of service attack. Kernel 3.10.x and 4.18.x branches are believed to be vulnerable.

CVSS 3.1 · 6.5 Medium EPSS 1.8% KEV · Not listed
Vendors
Canonical Debian Linux and 2 more
Products
CVE-2019-3846

kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c

A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network.

CVSS 3.1 · 8.8 High EPSS 5.9% KEV · Not listed
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CVE-2019-1559

0-byte record padding oracle

If an application encounters a fatal protocol error and then calls SSL_shutdown() twice (once to send a close_notify, and once to receive one) then OpenSSL can respond differently to the calling application if a 0 byte record is received with invalid padding compared to if a 0 byte record is received with an invalid MAC. If the application then behaves differently based on that in a way that is detectable to the remote peer, then this amounts to a padding oracle that could be used to decrypt data. In order for this to be exploitable "non-stitched" ciphersuites must be in use. Stitched ciphersuites are optimised implementations of certain commonly used ciphersuites. Also the application must call SSL_shutdown() twice even if a protocol error has occurred (applications should not do this but some do anyway). Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q).

CVSS 3.1 · 5.9 Medium EPSS 17.1% KEV · Not listed
Vendors
Canonical Debian F5 and 10 more
CVE-2019-12615

kernel: null pointer dereference in get_vdev_port_node_info in arch /sparc/kernel/mdesc.c

An issue was discovered in get_vdev_port_node_info in arch/sparc/kernel/mdesc.c in the Linux kernel through 5.1.6. There is an unchecked kstrdup_const of node_info->vdev_port.name, which might allow an attacker to cause a denial of service (NULL pointer dereference and system crash).

CVSS 3.1 · 7.5 High EPSS 3.9% KEV · Not listed
Vendors
CVE-2019-11815

kernel: race condition in rds_tcp_kill_sock in net/rds/tcp.c leading to use-after-free

An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c in the Linux kernel before 5.0.8. There is a race condition leading to a use-after-free, related to net namespace cleanup.

CVSS 3.1 · 8.1 High EPSS 4.4% KEV · Not listed
Vendors
Canonical Debian Linux and 2 more
Products
CVE-2019-10126

kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c

A flaw was found in the Linux kernel. A heap based buffer overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c might lead to memory corruption and possibly other consequences.

CVSS 3.1 · 9.8 Critical EPSS 6.8% KEV · Not listed
Vendors
Canonical Debian Linux and 3 more
Products