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  • Results Type: Overview
  • Keyword (text search): cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
There are 365 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2021-3493

The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an underlying file system. Due to the combination of unprivileged user namespaces along with a patch carried in the Ubuntu kernel to allow unprivileged overlay mounts, an attacker could use this to gain elevated privileges.

Published: April 17, 2021; 1:15:14 AM -0400
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2021-3492

Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could use this to cause a denial of service (kernel memory exhaustion) or gain privileges via executing arbitrary code. AKA ZDI-CAN-13562.

Published: April 17, 2021; 1:15:13 AM -0400
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2019-7306

Byobu Apport hook may disclose sensitive information since it automatically uploads the local user's .screenrc which may contain private hostnames, usernames and passwords. This issue affects: byobu

Published: April 16, 2020; 10:15:11 PM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2019-11476

An integer overflow in whoopsie before versions 0.2.52.5ubuntu0.1, 0.2.62ubuntu0.1, 0.2.64ubuntu0.1, 0.2.66, results in an out-of-bounds write to a heap allocated buffer when processing large crash dumps. This results in a crash or possible code-execution in the context of the whoopsie process.

Published: August 29, 2019; 11:15:10 AM -0400
V3.0: 7.8 HIGH
V2.0: 4.6 MEDIUM
CVE-2019-9518

Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.

Published: August 13, 2019; 5:15:13 PM -0400
V3.1: 7.5 HIGH
V2.0: 7.8 HIGH
CVE-2019-9517

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.

Published: August 13, 2019; 5:15:12 PM -0400
V3.1: 7.5 HIGH
V2.0: 7.8 HIGH
CVE-2019-9516

Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory.

Published: August 13, 2019; 5:15:12 PM -0400
V3.1: 6.5 MEDIUM
V2.0: 6.8 MEDIUM
CVE-2019-9515

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

Published: August 13, 2019; 5:15:12 PM -0400
V3.1: 7.5 HIGH
V2.0: 7.8 HIGH
CVE-2019-9514

Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.

Published: August 13, 2019; 5:15:12 PM -0400
V3.1: 7.5 HIGH
V2.0: 7.8 HIGH
CVE-2019-9513

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU.

Published: August 13, 2019; 5:15:12 PM -0400
V3.1: 7.5 HIGH
V2.0: 7.8 HIGH
CVE-2019-9512

Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

Published: August 13, 2019; 5:15:12 PM -0400
V3.0: 7.5 HIGH
V2.0: 7.8 HIGH
CVE-2019-9511

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

Published: August 13, 2019; 5:15:12 PM -0400
V3.1: 7.5 HIGH
V2.0: 7.8 HIGH
CVE-2019-13132

In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated client connecting to a libzmq application, running with a socket listening with CURVE encryption/authentication enabled, may cause a stack overflow and overwrite the stack with arbitrary data, due to a buffer overflow in the library. Users running public servers with the above configuration are highly encouraged to upgrade as soon as possible, as there are no known mitigations.

Published: July 10, 2019; 3:15:10 PM -0400
V3.0: 9.8 CRITICAL
V2.0: 7.5 HIGH
CVE-2019-12781

An issue was discovered in Django 1.11 before 1.11.22, 2.1 before 2.1.10, and 2.2 before 2.2.3. An HTTP request is not redirected to HTTPS when the SECURE_PROXY_SSL_HEADER and SECURE_SSL_REDIRECT settings are used, and the proxy connects to Django via HTTPS. In other words, django.http.HttpRequest.scheme has incorrect behavior when a client uses HTTP.

Published: July 01, 2019; 10:15:10 AM -0400
V3.0: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2019-12817

arch/powerpc/mm/mmu_context_book3s64.c in the Linux kernel before 5.1.15 for powerpc has a bug where unrelated processes may be able to read/write to one another's virtual memory under certain conditions via an mmap above 512 TB. Only a subset of powerpc systems are affected.

Published: June 25, 2019; 8:15:11 AM -0400
V3.0: 7.0 HIGH
V2.0: 6.9 MEDIUM
CVE-2018-20843

In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).

Published: June 24, 2019; 1:15:09 PM -0400
V3.1: 7.5 HIGH
V2.0: 7.8 HIGH
CVE-2019-11479

Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.

Published: June 18, 2019; 8:15:12 PM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2019-11478

Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e.

Published: June 18, 2019; 8:15:12 PM -0400
V3.0: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2019-11477

Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit 3b4929f65b0d8249f19a50245cd88ed1a2f78cff.

Published: June 18, 2019; 8:15:12 PM -0400
V3.0: 7.5 HIGH
V2.0: 7.8 HIGH
CVE-2019-0196

A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38. Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request incorrectly.

Published: June 11, 2019; 6:29:03 PM -0400
V3.0: 5.3 MEDIUM
V2.0: 5.0 MEDIUM