CVE-2002-0657: Buffer overflow in OpenSSL 0.9.7 before 0.9.7-beta3, with Kerberos enabled, allows attackers to execute arbitrary code via a long master key
Noroxi assessment
Priority: Monitor (action score 33/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 9.2% (FIRST EPSS); higher than 95.4% of all records.
- No special conditions are required; it is repeatable.
- Fixed version: openssl (Debian:12) 0.9.6e-1; openssl (Debian:3.0) 0.9.6c-2.woody.0, 0.9.6c-2.woody.1; openssl094 (Debian:3.0) 0.9.4-6.woody.2, 0.9.4-6.woody.0, 0.9.4-6.woody.1.
Low priority for now. Upgrade to openssl (Debian:12) 0.9.6e-1; openssl (Debian:3.0) 0.9.6c-2.woody.0, 0.9.6c-2.woody.1; openssl094 (Debian:3.0) 0.9.4-6.woody.2, 0.9.4-6.woody.0, 0.9.4-6.woody.1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Buffer overflow in OpenSSL 0.9.7 before 0.9.7-beta3, with Kerberos enabled, allows attackers to execute arbitrary code via a long master key.
- Published
- Aug 12, 2002
- Updated
- Jun 16, 2026
- EPSS
- 9.2% · 95th percentile
- CWE
- —
Report tools
Action score
33
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 3 / 30 · 9.2%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| openssl | openssl | cpe:2.3:a:openssl:openssl |
Check your server's TLS configuration
The OpenSSL version can't be seen from outside; the free SSL checker tests your certificate, enabled TLS versions and weak ciphers. Confirm the version on your server with the package manager.
Run the SSL checkAffected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- openssl openssl0.9.7
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | openssl | before 0.9.6e-1 | 0.9.6e-1 |
| Debian:3.0 | openssl | before 0.9.6c-2.woody.0 | 0.9.6c-2.woody.0 |
| Debian:3.0 | openssl | before 0.9.6c-2.woody.1 | 0.9.6c-2.woody.1 |
| Debian:3.0 | openssl094 | before 0.9.4-6.woody.2 | 0.9.4-6.woody.2 |
| Debian:3.0 | openssl094 | before 0.9.4-6.woody.0 | 0.9.4-6.woody.0 |
| Debian:3.0 | openssl094 | before 0.9.4-6.woody.1 | 0.9.4-6.woody.1 |
| Debian:3.0 | openssl095 | before 0.9.5a-6.woody.1 | 0.9.5a-6.woody.1 |
| Debian:3.0 | openssl095 | before 0.9.5a-6.woody.0 | 0.9.5a-6.woody.0 |
Same product
openssl: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-0160The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows…KEV90Now
- CVE-2021-3711SM2 Decryption Buffer Overflow65This week
- CVE-2003-0545Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code…65This week
Published before and after this one in the same product
- ← EarlierCVE-2002-0655Aug 12, 2002 · OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, does not properly handle ASCII representations of integers on 64 bit platforms…32Monitor
- ← EarlierCVE-2002-0656Aug 12, 2002 · Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote attackers to execute arbitrary code via (1) a…57Plan
- Later →CVE-2002-0659Aug 12, 2002 · The ASN1 library in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allows remote attackers to cause a denial of service via…31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:openssl | 0.9.6e-1 · Debian:12 | Package registry (OSV) |
| debian:openssl094 | 0.9.4-6.woody.0 · Debian:3.0 | Package registry (OSV) |
| debian:openssl095 | 0.9.5a-6.woody.0 · Debian:3.0 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
—
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (8 more)Show less
- ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-033.1.txt
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:33.openssl.asc
- distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000513
- www.cert.org/advisories/CA-2002-23.html
- www.iss.net/security_center/static/9715.php
- www.kb.cert.org/vuls/id/561275
- www.linux-mandrake.com/en/security/2002/MDKSA-2002-046.php
- www.securityfocus.com/bid/5361
Vendor advisories and official records. Exploit/PoC links are deliberately left out.