Vulnerabilities (CVE)

Filtered by vendor Canonical Subscribe
Filtered by product Ubuntu Linux
Total 4140 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2018-18955 2 Canonical, Linux 2 Ubuntu Linux, Linux Kernel 2020-08-24 4.4 MEDIUM 7.0 HIGH
In the Linux kernel 4.15.x through 4.19.x before 4.19.2, map_write() in kernel/user_namespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAP_SYS_ADMIN in an affected user namespace can bypass access controls on resources outside the namespace, as demonstrated by reading /etc/shadow. This occurs because an ID transformation takes place properly for the namespaced-to-kernel direction but not for the kernel-to-namespaced direction.
CVE-2019-7663 4 Canonical, Debian, Libtiff and 1 more 4 Ubuntu Linux, Debian Linux, Libtiff and 1 more 2020-08-24 4.3 MEDIUM 6.5 MEDIUM
An Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted tiff file. This is different from CVE-2018-12900.
CVE-2018-11685 3 Canonical, Liblouis, Opensuse 3 Ubuntu Linux, Liblouis, Leap 2020-08-24 6.8 MEDIUM 8.8 HIGH
Liblouis 3.5.0 has a stack-based Buffer Overflow in the function compileHyphenation in compileTranslationTable.c.
CVE-2018-17962 6 Canonical, Debian, Oracle and 3 more 6 Ubuntu Linux, Debian Linux, Linux and 3 more 2020-08-24 5.0 MEDIUM 7.5 HIGH
Qemu has a Buffer Overflow in pcnet_receive in hw/net/pcnet.c because an incorrect integer data type is used.
CVE-2018-1000127 4 Canonical, Debian, Memcached and 1 more 4 Ubuntu Linux, Debian Linux, Memcached and 1 more 2020-08-24 5.0 MEDIUM 7.5 HIGH
memcached version prior to 1.4.37 contains an Integer Overflow vulnerability in items.c:item_free() that can result in data corruption and deadlocks due to items existing in hash table being reused from free list. This attack appear to be exploitable via network connectivity to the memcached service. This vulnerability appears to have been fixed in 1.4.37 and later.
CVE-2018-17456 4 Canonical, Debian, Git-scm and 1 more 11 Ubuntu Linux, Debian Linux, Git and 8 more 2020-08-24 7.5 HIGH 9.8 CRITICAL
Git before 2.14.5, 2.15.x before 2.15.3, 2.16.x before 2.16.5, 2.17.x before 2.17.2, 2.18.x before 2.18.1, and 2.19.x before 2.19.1 allows remote code execution during processing of a recursive "git clone" of a superproject if a .gitmodules file has a URL field beginning with a '-' character.
CVE-2018-18497 2 Canonical, Mozilla 2 Ubuntu Linux, Firefox 2020-08-24 4.3 MEDIUM 6.5 MEDIUM
Limitations on the URIs allowed to WebExtensions by the browser.windows.create API can be bypassed when a pipe in the URL field is used within the extension to load multiple pages as a single argument. This could allow a malicious WebExtension to open privileged about: or file: locations. This vulnerability affects Firefox < 64.
CVE-2019-7581 2 Canonical, Libming 2 Ubuntu Linux, Libming 2020-08-24 6.8 MEDIUM 8.8 HIGH
The parseSWF_ACTIONRECORD function in util/parser.c in libming through 0.4.8 allows remote attackers to have unspecified impact via a crafted swf file that triggers a memory allocation failure, a different vulnerability than CVE-2018-7876.
CVE-2018-1000300 2 Canonical, Haxx 2 Ubuntu Linux, Curl 2020-08-24 7.5 HIGH 9.8 CRITICAL
curl version curl 7.54.1 to and including curl 7.59.0 contains a CWE-122: Heap-based Buffer Overflow vulnerability in denial of service and more that can result in curl might overflow a heap based memory buffer when closing down an FTP connection with very long server command replies.. This vulnerability appears to have been fixed in curl < 7.54.1 and curl >= 7.60.0.
CVE-2018-0500 2 Canonical, Haxx 2 Ubuntu Linux, Curl 2020-08-24 7.5 HIGH 9.8 CRITICAL
Curl_smtp_escape_eob in lib/smtp.c in curl 7.54.1 to and including curl 7.60.0 has a heap-based buffer overflow that might be exploitable by an attacker who can control the data that curl transmits over SMTP with certain settings (i.e., use of a nonstandard --limit-rate argument or CURLOPT_BUFFERSIZE value).
CVE-2018-1000199 4 Canonical, Debian, Linux and 1 more 10 Ubuntu Linux, Debian Linux, Linux Kernel and 7 more 2020-08-24 4.9 MEDIUM 5.5 MEDIUM
The Linux Kernel version 3.18 contains a dangerous feature vulnerability in modify_user_hw_breakpoint() that can result in crash and possibly memory corruption. This attack appear to be exploitable via local code execution and the ability to use ptrace. This vulnerability appears to have been fixed in git commit f67b15037a7a50c57f72e69a6d59941ad90a0f0f.
CVE-2018-5168 4 Canonical, Debian, Mozilla and 1 more 12 Ubuntu Linux, Debian Linux, Firefox and 9 more 2020-08-24 5.0 MEDIUM 5.3 MEDIUM
Sites can bypass security checks on permissions to install lightweight themes by manipulating the "baseURI" property of the theme element. This could allow a malicious site to install a theme without user interaction which could contain offensive or embarrassing images. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.
CVE-2019-7582 2 Canonical, Libming 2 Ubuntu Linux, Libming 2020-08-24 6.8 MEDIUM 8.8 HIGH
The readBytes function in util/read.c in libming through 0.4.8 allows remote attackers to have unspecified impact via a crafted swf file that triggers a memory allocation failure.
CVE-2019-19083 3 Canonical, Linux, Opensuse 3 Ubuntu Linux, Linux Kernel, Leap 2020-08-24 4.7 MEDIUM 4.7 MEDIUM
Memory leaks in *clock_source_create() functions under drivers/gpu/drm/amd/display/dc in the Linux kernel before 5.3.8 allow attackers to cause a denial of service (memory consumption). This affects the dce112_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c, the dce100_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c, the dcn10_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c, the dcn20_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c, the dce120_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c, the dce110_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c, and the dce80_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c, aka CID-055e547478a1.
CVE-2018-18397 3 Canonical, Linux, Redhat 10 Ubuntu Linux, Linux Kernel, Enterprise Linux Desktop and 7 more 2020-08-24 2.1 LOW 5.5 MEDIUM
The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c.
CVE-2018-5172 2 Canonical, Mozilla 2 Ubuntu Linux, Firefox 2020-08-24 4.3 MEDIUM 4.3 MEDIUM
The Live Bookmarks page and the PDF viewer can run injected script content if a user pastes script from the clipboard into them while viewing RSS feeds or PDF files. This could allow a malicious site to socially engineer a user to copy and paste malicious script content that could then run with the context of either page but does not allow for privilege escalation. This vulnerability affects Firefox < 60.
CVE-2018-5345 5 Canonical, Debian, Fedoraproject and 2 more 10 Ubuntu Linux, Debian Linux, Fedora and 7 more 2020-08-24 6.8 MEDIUM 7.8 HIGH
A stack-based buffer overflow within GNOME gcab through 0.7.4 can be exploited by malicious attackers to cause a crash or, potentially, execute arbitrary code via a crafted .cab file.
CVE-2018-1000030 2 Canonical, Python 2 Ubuntu Linux, Python 2020-08-24 3.3 LOW 3.6 LOW
Python 2.7.14 is vulnerable to a Heap-Buffer-Overflow as well as a Heap-Use-After-Free. Python versions prior to 2.7.14 may also be vulnerable and it appears that Python 2.7.17 and prior may also be vulnerable however this has not been confirmed. The vulnerability lies when multiply threads are handling large amounts of data. In both cases there is essentially a race condition that occurs. For the Heap-Buffer-Overflow, Thread 2 is creating the size for a buffer, but Thread1 is already writing to the buffer without knowing how much to write. So when a large amount of data is being processed, it is very easy to cause memory corruption using a Heap-Buffer-Overflow. As for the Use-After-Free, Thread3->Malloc->Thread1->Free's->Thread2-Re-uses-Free'd Memory. The PSRT has stated that this is not a security vulnerability due to the fact that the attacker must be able to run code, however in some situations, such as function as a service, this vulnerability can potentially be used by an attacker to violate a trust boundary, as such the DWF feels this issue deserves a CVE.
CVE-2019-18197 4 Canonical, Debian, Linux and 1 more 4 Ubuntu Linux, Debian Linux, Linux Kernel and 1 more 2020-08-24 5.1 MEDIUM 7.5 HIGH
In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.
CVE-2018-18281 3 Canonical, Debian, Linux 3 Ubuntu Linux, Debian Linux, Linux Kernel 2020-08-24 4.6 MEDIUM 7.8 HIGH
Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19.