A deserialization flaw was discovered in the jackson-databind that could allow an unauthenticated user to perform code execution by sending the maliciously crafted input to the readValue method of the ObjectMapper. This issue extends the previous flaws CVE-2017-7525 and CVE-2017-17485 by blacklisting more classes that could be used maliciously.

GNU C Library (aka glibc or libc6) is vulnerable to a denial of service, caused by an assertion failure when processing invalid input sequences in the ISO-2022-JP-3 encoding in the iconv function. By sending specially-crafted input, a remote attacker could exploit this vulnerability to cause the application to crash.

A memory leak in the fastrpcdmabufattach() function in drivers/misc/fastrpc.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering dmagetsgtable() failures, aka CID-fc739a058d99.

A memory leak in the adisupdatescanmodeburst() function in drivers/iio/imu/adisbuffer.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption), aka CID-9c0530e898f3.

A memory leak in the adisupdatescanmode() function in drivers/iio/imu/adisbuffer.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption), aka CID-ab612b1daf41.

A memory leak in the gscanopen() function in drivers/net/can/usb/gsusb.c in the Linux kernel before 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering usbsubmiturb() failures, aka CID-fb5be6a7b486.

A memory leak in the rpmsgeptdevwriteiter() function in drivers/rpmsg/rpmsgchar.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering copyfromiterfull() failures, aka CID-bbe692e349e2.

A flaw in the kernels implementation of ptrace which could inadvertantly grant elevated permissions to an attacker who could abuse the relationship between tracer and the process being traced.

The mechanism used to link the process requesting the ptrace and the process being ptraced could allow a local user to obtain root level priviledges by creating an opportunity to abuse the frequently used pattern of dropping privileges and then execve a child with reduced privileges/permissions.

References: https://bugs.chromium.org/p/project-zero/issues/detail?id=1903 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.17 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6994eefb0053799d2e07cd140df6c2ea106c41ee https://github.com/torvalds/linux/commit/6994eefb0053799d2e07cd140df6c2ea106c41ee

An out-of-bounds read in cmstypes.c in TypeMLURead function was found, leading to heap memory leak triggered by crafted ICC profile.

Upstream patch:

https://github.com/mm2/Little-CMS/commit/5ca71a7bc18b6897ab21d815d15e218e204581e2

CVE request:

http://seclists.org/oss-sec/2016/q3/288

A memory leak in the cryptoreportstat() function in crypto/cryptouserstat.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering cryptoreportstatalg() failures, aka CID-c03b04dcdba1.

Last updated 29 November 2024

Impact

When using --userns-remap, if the root user in the remapped namespace has access to the host filesystem they can modify files under /var/lib/docker/<remapping> that cause writing files with extended privileges.

Patches

Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user.

Credits

Maintainers would like to thank Alex Chapman for discovering the vulnerability; @awprice, @nathanburrell, @raulgomis, @chris-walz, @erin-jensby, @bassmatt, @mark-adams, @dbaxa for working on it and Zac Ellis for responsibly disclosing it to security@docker.com