The xdr_bytes and xdr_string functions in the GNU C Library (aka glibc or libc6) 2.25 mishandle failures of buffer deserialization, which allows remote attackers to cause a denial of service (virtual memory allocation, or memory consumption if an overcommit setting is not used) via a crafted UDP packet to port 111, a related issue to CVE-2017-8779.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-8804 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | glibc | Will not fix |
| Red Hat Enterprise Linux 7 | compat-glibc | Will not fix |
| Red Hat Enterprise Linux 6 | glibc | Will not fix |
| Red Hat Enterprise Linux 6 | compat-glibc | Will not fix |
| Red Hat Enterprise Linux 5 | compat-glibc | Will not fix |
| Red Hat Enterprise Linux 5 | glibc | Will not fix |
Vulmon