UBUNTU-CVE-2018-19854
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).
02 / AFFECTED SOFTWARE
Affected packages
8 explicit affected versions
3 explicit affected versions
31 explicit affected versions
26 explicit affected versions
46 explicit affected versions
2 explicit affected versions
25 explicit affected versions
19 explicit affected versions
21 explicit affected versions
18 explicit affected versions
2 explicit affected versions
1 explicit affected versions
19 explicit affected versions
16 explicit affected versions
2 explicit affected versions
21 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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).
05 / REFERENCES
Further evidence
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087
- https://ubuntu.com/security/CVE-2018-19854
- https://ubuntu.com/security/notices/USN-3872-1
- https://ubuntu.com/security/notices/USN-3878-1
- https://ubuntu.com/security/notices/USN-3878-2
- https://ubuntu.com/security/notices/USN-3901-1
- https://ubuntu.com/security/notices/USN-3901-2
- https://www.cve.org/CVERecord?id=CVE-2018-19854