2.6

CVE-2011-1945: openssl Cryptographic Issues

Modified
AliasesDEBIAN-CVE-2011-1945DSA-2309-1
Published 31-05-2011Last modified 06-08-2024

Vulnerability summary

CVE-2011-1945 is a low (CVSS 2.6) Cryptographic Issues vulnerability in openssl. EPSS estimates a 3.29% chance of exploitation in the next 30 days, higher than 88.4% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 2.6, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
2.6/10
010
Low · v2.0 (NVD)
EPSS score
3.29%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
SUSE-SU-403SUSE-SU-403_FORBIDDEN-1

Timeline

  1. 31-05-2011
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The elliptic curve cryptography (ECC) subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm (ECDSA) is used for the ECDHE_ECDSA cipher suite, does not properly implement curves over binary fields, which makes it easier for context-dependent attackers to determine private keys via a timing attack and a lattice calculation.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

3.29%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

No change 0.00 pp

From 3.29% 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

1 found
  • referenceUnverified

    Exploit Reference (eprint.iacr.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

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

Debian1 product
  • openssl< 0.9.8g-15+lenny12 | < 0.9.8o-4squeeze2 | < 1.0.0e-1
Openssl1 product
  • opensslEOL≤ 1.0.0d | 0.9.1c | 0.9.2b | 0.9.3 | 0.9.3a | 0.9.4 | 0.9.5 | 0.9.5:beta1 | 0.9.5:beta2 | 0.9.5a | 0.9.5a:beta1 | 0.9.5a:beta2 | 0.9.6 | 0.9.6:beta1 | 0.9.6:beta2 | 0.9.6:beta3 | 0.9.6a | 0.9.6a:beta1 | 0.9.6a:beta2 | 0.9.6a:beta3 | 0.9.6b | 0.9.6c | 0.9.6d | 0.9.6e | 0.9.6f | 0.9.6g | 0.9.6h | 0.9.6i | 0.9.6j | 0.9.6k | 0.9.6l | 0.9.6m | 0.9.7 | 0.9.7:beta1 | 0.9.7:beta2 | 0.9.7:beta3 | 0.9.7:beta4 | 0.9.7:beta5 | 0.9.7:beta6 | 0.9.7a | 0.9.7b | 0.9.7c | 0.9.7d | 0.9.7e | 0.9.7f | 0.9.7g | 0.9.7h | 0.9.7i | 0.9.7j | 0.9.7k | 0.9.7l | 0.9.7m | 0.9.8 | 0.9.8a | 0.9.8b | 0.9.8c | 0.9.8d | 0.9.8e | 0.9.8f | 0.9.8g | 0.9.8h | 0.9.8i | 0.9.8j | 0.9.8k | 0.9.8l | 0.9.8m | 0.9.8n | 0.9.8o | 0.9.8p | 1.0.0 | 1.0.0:beta1 | 1.0.0:beta2 | 1.0.0:beta3 | 1.0.0:beta4 | 1.0.0:beta5 | 1.0.0a | 1.0.0b | 1.0.0c

2 vendors · 2 products

References

12 links
Show all 12 references