SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2011-0520

The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and probably other versions allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a long DNS hostname with a…

HIGH 7.5EPSS 5.17%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (5.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and probably other versions allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a long DNS hostname with a large number of labels, which triggers a heap-based buffer overflow.

CVSS 2.0
7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
5.17% probability · 92th percentile
CISA KEV
Not listed
Weakness
CWE-119
Affected
maradns/maradns
Source
secalert@redhat.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.