5

CVE-2011-2721: clamav Numeric Errors

Modified
AliasesDEBIAN-CVE-2011-2721
Published 05-08-2011Last modified 06-08-2024

Vulnerability summary

CVE-2011-2721 is a medium (CVSS 5.0) Numeric Errors vulnerability in clamav. EPSS estimates a 3.38% chance of exploitation in the next 30 days, higher than 88.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
3.38%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2024:10571-1

Timeline

  1. 05-08-2011
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

Off-by-one error in the cli_hm_scan function in matcher-hash.c in libclamav in ClamAV before 0.97.2 allows remote attackers to cause a denial of service (daemon crash) via an e-mail message that is not properly handled during certain hash calculations.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

3.38%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

No change 0.00 pp

From 3.38% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Clamav1 product
  • clamav≤ 0.97.1 | 0.01 | 0.02 | 0.3 | 0.03 | 0.05 | 0.8:rc3 | 0.9:rc1 | 0.10 | 0.12 | 0.13 | 0.14 | 0.14:pre | 0.15 | 0.20 | 0.21 | 0.22 | 0.23 | 0.24 | 0.51 | 0.52 | 0.53 | 0.54 | 0.60 | 0.60p | 0.65 | 0.66 | 0.67 | 0.67-1 | 0.68 | 0.68.1 | 0.70 | 0.70:rc | 0.71 | 0.72 | 0.73 | 0.74 | 0.75 | 0.75.1 | 0.80 | 0.80:rc | 0.80:rc1 | 0.80:rc2 | 0.80:rc3 | 0.80:rc4 | 0.80_rc | 0.81 | 0.81:rc1 | 0.82 | 0.83 | 0.84 | 0.84:rc1 | 0.84:rc2 | 0.85 | 0.85.1 | 0.86 | 0.86:rc1 | 0.86.1 | 0.86.2 | 0.87 | 0.87.1 | 0.88 | 0.88.1 | 0.88.2 | 0.88.3 | 0.88.4 | 0.88.5 | 0.88.6 | 0.88.7 | 0.88.7_p0 | 0.88.7_p1 | 0.90 | 0.90:rc1 | 0.90:rc1.1 | 0.90:rc2 | 0.90:rc3 | 0.90.1 | 0.90.1_p0 | 0.90.2 | 0.90.2_p0 | 0.90.3 | 0.90.3_p0 | 0.90.3_p1 | 0.91 | 0.91:rc1 | 0.91:rc2 | 0.91.1 | 0.91.2 | 0.91.2_p0 | 0.92 | 0.92.1 | 0.92_p0 | 0.93 | 0.93.1 | 0.93.2 | 0.93.3 | 0.94 | 0.94.1 | 0.94.2 | 0.95 | 0.95:rc1 | 0.95:rc2 | 0.95:src1 | 0.95:src2 | 0.95.1 | 0.95.2 | 0.95.3 | 0.96 | 0.96:rc1 | 0.96:rc2 | 0.96.1 | 0.96.2 | 0.96.3 | 0.96.4 | 0.96.5 | 0.97 | 0.97:rc
Debian1 product
  • clamav< 0.97.2+dfsg-1

2 vendors · 2 products

References

19 links
Show all 19 references