5.8

CVE-2011-4354: openssl Cryptographic Issues

Modified
AliasesDEBIAN-CVE-2011-4354
Published 27-01-2012Last modified 07-08-2024

Vulnerability summary

CVE-2011-4354 is a medium (CVSS 5.8) Cryptographic Issues vulnerability in openssl. EPSS estimates a 2.99% chance of exploitation in the next 30 days, higher than 87.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.8, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.8/10
010
Medium · v2.0 (NVD)
EPSS score
2.99%
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
DSA-2390-1

Timeline

  1. 27-01-2012
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

crypto/bn/bn_nist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows remote attackers to obtain the private key of a TLS server via multiple handshake attempts.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.99%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.99% 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.

Debian1 product
  • openssl< 0.9.8o-4squeeze3
Openssl1 product
  • opensslEOL≤ 0.9.8g | 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

2 vendors · 2 products

References

9 links