Vulnerability Description
An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker does not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.19.3 |
| Canonical | Ubuntu Linux | 14.04 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39PatchVendor Advisory
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://github.com/torvalds/linux/commit/f43f39958beb206b53292801e216d9b8a660f08PatchThird Party Advisory
- https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3Vendor Advisory
- https://usn.ubuntu.com/3872-1/Third Party Advisory
- https://usn.ubuntu.com/3878-1/Third Party Advisory
- https://usn.ubuntu.com/3878-2/Third Party Advisory
- https://usn.ubuntu.com/3901-1/Third Party Advisory
- https://usn.ubuntu.com/3901-2/Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39PatchVendor Advisory
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://github.com/torvalds/linux/commit/f43f39958beb206b53292801e216d9b8a660f08PatchThird Party Advisory
- https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3Vendor Advisory
FAQ
What is CVE-2018-19854?
CVE-2018-19854 is a vulnerability with a CVSS score of 4.7 (MEDIUM). An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that...
How severe is CVE-2018-19854?
CVE-2018-19854 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-19854?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux.