CVE-2013-0243
haskell-tls-extra before 0.6.1 has Basic Constraints attribute vulnerability may lead to Man in...
haskell-tls-extra before 0.6.1 has Basic Constraints attribute vulnerability may lead to Man in the Middle attacks on TLS connections
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
haskell-tls-extra before 0.6.1 has Basic Constraints attribute vulnerability may lead to Man in the Middle attacks on TLS connections
- Record
CVE-2013-0243- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
haskell-tls-extra before 0.6.1 has Basic Constraints attribute vulnerability may lead to Man in the Middle attacks on TLS connections
- Record
CVE-2013-0243- Updated
- 2026-11-02
EUVDEUVD-2013-0275 No score
haskell-tls-extra before 0.6.1 has Basic Constraints attribute vulnerability may lead to Man in the Middle attacks on TLS connections
- Record
EUVD-2013-0275- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4q83-8359-v5v3
haskell-tls-extra before 0.6.1 has Basic Constraints attribute vulnerability may lead to Man in...
haskell-tls-extra before 0.6.1 has Basic Constraints attribute vulnerability may lead to Man in the Middle attacks on TLS connections
- Record
GHSA-4q83-8359-v5v3- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVHSEC-2023-0005 No score
tls-extra: certificate validation does not check Basic Constraints
tls-extra: certificate validation does not check Basic Constraints
tls-extra does not check the Basic Constraints extension of a certificate in certificate chain processing. Any certificate is treated as a CA certificate. As a consequence, anyone who has a valid certificate can use it to sign another one (with an arbitrary subject DN/domain name embedded into it) and have it accepted by tls. This allows MITM attacks on TLS connections.
- Record
HSEC-2023-0005- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
tls-extraHackage |
0.1.0 up to 0.4.6.1, plus listed versions 0.1.10.1.20.1.30.1.40.1.5 Show 18 moreShow less0.1.60.1.70.1.80.1.90.2.00.2.10.2.20.2.30.3.00.3.10.4.00.4.10.4.20.4.2.10.4.30.4.40.4.50.4.6 |
0.4.6.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2013-0243 is a high vulnerability (CVSS 7.4) in Haskell-tls-extra, published December 5, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.05%, the 64th percentile. Fixed in tls-extra 0.4.6.1.
References
security-tracker.debian.org/tracker/CVE-2013-0243
access.redhat.com/security/cve/cve-2013-0243
openwall.com/lists/oss-security/2013/01/30/6
nvd.nist.gov/vuln/detail/CVE-2013-0243
github.com/advisories/GHSA-4q83-8359-v5v3