GNU Libtasn1-4.13 libtasn1-4.13 version libtasn1-4.13, libtasn1-4.12 contains a DoS, specifically CPU usage will reach 100% when running asn1Paser against the POC due to an issue in _asn1_expand_object_id(p_tree), after a long time, the program will be killed. This attack appears to be exploitable via parsing a crafted file.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-1000654 from the MITRE CVE dictionary dictionary and NIST NVD.
This flaw is in the asn1Parser binary included in libtasn1-tools RPM. The dynamic library libtasn1 and libtasn1-devel RPMs are not affected.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 4 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | Low |
| Platform | Package | State |
|---|---|---|
| Red Hat Virtualization 4 | libtasn1 | Will not fix |
| Red Hat Satellite 6 | libtasn1 | Will not fix |
| Red Hat Enterprise Linux 7 | libtasn1 | Will not fix |
| Red Hat Enterprise Linux 6 | libtasn1 | Will not fix |
Vulmon