CVE-2017-8804

HIGH

Description

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.

References

http://www.openwall.com/lists/oss-security/2017/05/05/2

http://www.securityfocus.com/bid/98339

https://bugzilla.suse.com/show_bug.cgi?id=1037559#c7

https://sourceware.org/bugzilla/show_bug.cgi?id=21461

https://sourceware.org/ml/libc-alpha/2017-05/msg00105.html

Details

Source: MITRE

Published: 2017-05-07

Updated: 2017-05-16

Type: CWE-502

Risk Information

CVSS v2.0

Base Score: 7.8

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH