Cryptographic issues in Linux kernel crypto

1) Cryptographic issues

EUVDB-ID: #VU92520

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2013-2548

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to cryptographic issues error within the crypto_shash_report() function in crypto/shash.c, within the crypto_rng_report() function in crypto/rng.c, within the crypto_pcomp_report() function in crypto/pcompress.c, within the crypto_report_cipher(), crypto_report_comp() and crypto_report_one() functions in crypto/crypto_user.c, within the crypto_blkcipher_report() function in crypto/blkcipher.c, within the crypto_ahash_report() function in crypto/ahash.c, within the crypto_aead_report() and crypto_nivaead_report() functions in crypto/aead.c, within the crypto_ablkcipher_report() and crypto_givcipher_report() functions in crypto/ablkcipher.c. A local user can gain access to sensitive information.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://github.com/torvalds/linux/commit/9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6
https://www.openwall.com/lists/oss-security/2013/03/05/13
https://www.ubuntu.com/usn/USN-1795-1
https://www.ubuntu.com/usn/USN-1796-1
https://www.ubuntu.com/usn/USN-1793-1
https://www.ubuntu.com/usn/USN-1794-1
https://www.ubuntu.com/usn/USN-1797-1
https://www.mandriva.com/security/advisories?name=MDVSA-2013:176
https://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.