6.1

CVE-2012-3495: citrix xenserver Improper Input Validation

CVSS: 6.1v2.0MediumModified
AliasesDEBIAN-CVE-2012-3495
Published 23-11-2012Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2012-3495 is a medium (CVSS 6.1) Improper Input Validation vulnerability in citrix xenserver. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 36.6% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v2.0 (NVD)
EPSS score
0.44%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 23-11-2012
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

0.00 pp

From 0.44% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.44%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Citrix1 product
  • xenserver≤ 6.0.2 | 5.0 | 5.5 | 5.6 | 5.6:fp1 | 5.6:sp2 | 6.0
Debian1 product
  • xen< 4.1.3-2
Xen1 product
  • xen4.1.0 | 4.1.1 | 4.1.2 | 4.1.3

3 vendors · 3 products

References

17 links
Show all 17 references