CVE-2013-1445

Exp

The Crypto.Random.atfork function in PyCrypto before 2.6.1 does not properly reseed the pseudo-random number generator (PRNG) before allowing a child process to access it, which makes it easier for context-dependent attackers to obtain sensitive information by leveraging a race condition in which a child process is created and accesses the PRNG within the same rate-limit period as another process.

Published: 2013-10-26 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-1445 is rated Exploit Available (52.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.42%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2013-1445

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2013-1445

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.78% 0.42% -0.36%
2 2025-03-29 0.42% 0.78% +0.36%
3 2025-03-17 — 0.42% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-1445

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2013-1445

GitHub Security Advisory for CVE-2013-1445

GHSA-x377-f64p-hf5j · Severity: high · Ecosystem: pip — PyCrypto does not properly reseed PRNG before allowing access

OS Trackers for CVE-2013-1445

vendor priority summary link
redhat low — https://access.redhat.com/security/cve/CVE-2013-1445
ubuntu low CVE-2013-1445 low priority: Ubuntu including 1 source packages (python-crypto), 21 status rows across 21 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 12, ignored 8, released 1. https://ubuntu.com/security/CVE-2013-1445

Affected software / configurations for CVE-2013-1445

Vendor Product Version Raw CPE
dlitz pycrypto <= 2.6 cpe:2.3:a:dlitz:pycrypto:*:*:*:*:*:*:*:*
dlitz pycrypto 1.0.0 cpe:2.3:a:dlitz:pycrypto:1.0.0:*:*:*:*:*:*:*
dlitz pycrypto 1.0.1 cpe:2.3:a:dlitz:pycrypto:1.0.1:*:*:*:*:*:*:*
dlitz pycrypto 1.0.2 cpe:2.3:a:dlitz:pycrypto:1.0.2:*:*:*:*:*:*:*
dlitz pycrypto 2.0 cpe:2.3:a:dlitz:pycrypto:2.0:*:*:*:*:*:*:*
dlitz pycrypto 2.0.1 cpe:2.3:a:dlitz:pycrypto:2.0.1:*:*:*:*:*:*:*
dlitz pycrypto 2.1.0 cpe:2.3:a:dlitz:pycrypto:2.1.0:*:*:*:*:*:*:*
dlitz pycrypto 2.2 cpe:2.3:a:dlitz:pycrypto:2.2:*:*:*:*:*:*:*
dlitz pycrypto 2.3 cpe:2.3:a:dlitz:pycrypto:2.3:*:*:*:*:*:*:*
dlitz pycrypto 2.4 cpe:2.3:a:dlitz:pycrypto:2.4:*:*:*:*:*:*:*
dlitz pycrypto 2.4.1 cpe:2.3:a:dlitz:pycrypto:2.4.1:*:*:*:*:*:*:*
dlitz pycrypto 2.5 cpe:2.3:a:dlitz:pycrypto:2.5:*:*:*:*:*:*:*

References for CVE-2013-1445

cvelogic Threat Intelligence