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01 Record

CVE-2009-4355

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

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector

02 Description

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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
9.18% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 95.0% of scored records. A rank, not a probability.
NVD base score
The NVD has published no score for this record
NVD CVSS vector
No NVD score to derive
NVD analysis status
Modified. NVD last modified this record on 2026-06-16.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2010-01-14 19:00Z16 YR AGO
Last updated
2024-08-07 07:01Z2 YR AGO
Reserved
2009-12-18
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-399
  • CWE-401Missing Release of Memory after Effective LifetimeVariant
Data version
5.1
Document digest
d2e713e8c02ea37ea9b61690d049d1bb755f20ef21fee50cb27f0d4d1805adee

05 Affected products

VendorProductVersionsPlatforms
opensslopensslNot specified—
redhatenterprise_linuxNot specified—
redhatopensslNot specified—

06 References

07 Fixed in

Debian 12

  • openssl
    Fixed in 0.9.8k-8

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • openssl
    Fixed in 0.9.8k-8

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • openssl
    Fixed in 0.9.8k-8

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.