CVE-2009-4355 Details
Memory leak in the zlib_stateful_finish function in crypto/comp/c_zlib.c in OpenSSL 0.9.8l and earlier and 1.0.0 Beta through Beta 4 allows remote attackers to cause a denial of service (memory consumption) via vectors that trigger incorrect calls to the CRYPTO_cleanup_all_ex_data function, as demonstrated by use of SSLv3 and PHP with the Apache HTTP Server, a related issue to CVE-2008-1678.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2009-4355
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
3.92 Probability of exploitation activity being observed over the next 30 days (88th percentile)
CVSS score for CVE-2009-4355
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
5 Medium
Products affected by CVE-2009-4355
OpenSSL 0.9.8a
OpenSSL 0.9.8b
OpenSSL 0.9.8c
OpenSSL 0.9.8d
OpenSSL 0.9.8e
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Not available
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CVE-2009-4355 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
TW 2,092 22.60%
JP 1,579 17.06%
US 1,305 14.10%
DE 442 4.78%
KR 411 4.44%
NL 236 2.55%
RU 219 2.37%
CN 206 2.23%
IT 181 1.96%
FR 179 1.93%

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CVE-2009-4355 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Telecommunications 3,662 67.80%
Technology 1,306 24.18%
Real Estate 113 2.09%
Education 81 1.50%
Business Services 51 0.94%
Utilities 47 0.87%
Legal 41 0.76%
Government/Politics 39 0.72%
Media/Entertainment 12 0.22%
Consumer Goods 8 0.15%

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