python-crypto: PRNG not correctly reseeded in some situations
Published Oct 26, 2013
8.7
HIGHCVSS 4.0
EPSS 1.75%
Description
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.
Affected products
No data.
- ≤ 2.6
- 1.0.0
- 1.0.1
- 1.0.2
- 2.0
- 2.0.1
- 2.1.0
- 2.2
- 2.3
- 2.4
- 2.4.1
- 2.5
No data.
Red Hat Enterprise Linux 6
python-crypto
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | python-crypto | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not Vulnerable. This issue does not affect the version of python-crypto package as shipped with Red Hat Enterprise Linux 6.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.75% (0.01745) | 76.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.01% (0.02007) | 78.21th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.42% (0.00421) | 59.92th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.13% (0.00131) | 49.70th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.11% (0.00112) | 43.86th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.10% (0.00101) | 40.20th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.09% (0.00092) | 37.65th | v3 (v2023.03.01) |
| Oct 25, 2023 | 0.13% (0.00131) | 47.73th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.16% (0.00159) | 50.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
References (9)
- http://www.debian.org/security/2013/dsa-2781 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2013/10/17/3 mailing-listx_refsource_MLISTExploitPatch
- https://access.redhat.com/security/cve/CVE-2013-1445 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1020814 Issue Tracking
- https://github.com/advisories/GHSA-x377-f64p-hf5j Advisory
- https://github.com/dlitz/pycrypto/commit/19dcf7b15d61b7dc1a125a367151de40df6ef175 x_refsource_CONFIRMExploit
- https://github.com/pypa/advisory-database/tree/main/vulns/pycrypto/PYSEC-2013-29.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2013-1445
- https://www.cve.org/CVERecord?id=CVE-2013-1445
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2013/dsa-2781 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.openwall.com/lists/oss-security/2013/10/17/3 | mailing-listx_refsource_MLISTExploitPatch | |
| https://access.redhat.com/security/cve/CVE-2013-1445 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1020814 | Issue Tracking | |
| https://github.com/advisories/GHSA-x377-f64p-hf5j | Advisory | |
| https://github.com/dlitz/pycrypto/commit/19dcf7b15d61b7dc1a125a367151de40df6ef175 | x_refsource_CONFIRMExploit | |
| https://github.com/pypa/advisory-database/tree/main/vulns/pycrypto/PYSEC-2013-29.yaml | ||
| https://nvd.nist.gov/vuln/detail/CVE-2013-1445 | ||
| https://www.cve.org/CVERecord?id=CVE-2013-1445 |
Change history (0)
No recorded changes yet.