CVE-2017-15088 Memory corruption in krb5 1.5
Remote attackers can execute arbitrary code or cause denial of service via buffer overflow in MIT Kerberos 5 when processing untrusted X.509 data in specific configurations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-15088?
CVE-2017-15088 is a critical memory corruption vulnerability in Mit Kerberos 5, published on 23 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC certauth plugin code that is specific to Red Hat.
Which versions are affected by CVE-2017-15088?
It affects 1 product.
Linux distribution packages (9)
krb5 SUSE:Linux Enterprise Desktop 12 SP2 | All versions | 1.12.5-40.16.1 |
krb5 SUSE:Linux Enterprise Desktop 12 SP3 | All versions | 1.12.5-40.16.1 |
krb5 SUSE:Linux Enterprise Server 12 SP2 | All versions | 1.12.5-40.16.1 |
krb5 SUSE:Linux Enterprise Server 12 SP3 | All versions | 1.12.5-40.16.1 |
krb5 SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 | All versions | 1.12.5-40.16.1 |
krb5 SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 1.12.5-40.16.1 |
krb5 SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 1.12.5-40.16.1 |
krb5 SUSE:Linux Enterprise Software Development Kit 12 SP2 | All versions | 1.12.5-40.16.1 |
krb5 SUSE:Linux Enterprise Software Development Kit 12 SP3 | All versions | 1.12.5-40.16.1 |
Products include Mit Kerberos 5.
How do I fix CVE-2017-15088?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-15088 being exploited?
There is no known exploitation of CVE-2017-15088 in the wild and no public exploit code.
Other vulnerabilities in Mit Kerberos 5
Sources
Also known as ALPINE-CVE-2017-15088, CLEANSTART-2024-LJ56468, DEBIAN-CVE-2017-15088, GHSA-3jq7-j743-cxfp, SUSE-SU-2017:2948-1, UBUNTU-CVE-2017-15088.