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NVD / CVE Program· CNA GitHub_M

CVE-2024-34702: Botan has a Denial of Service Due to Excessive Name Constraints

Noroxi assessment

Priority: Monitor (action score 21/100)

  • 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: 0.84% (FIRST EPSS); higher than 58% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: botan (Alpine:v3.17) 2.19.5-r0; botan3 (Alpine:v3.21) 3.5.0-r0; botan (Debian:12) 2.19.3+dfsg-1+deb12u1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to botan (Alpine:v3.17) 2.19.5-r0; botan3 (Alpine:v3.21) 3.5.0-r0; botan (Debian:12) 2.19.3+dfsg-1+deb12u1 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

Botan is a C++ cryptography library. X.509 certificates can identify elliptic curves using either an object identifier or using explicit encoding of the parameters. Prior to 3.5.0 and 2.19.5, checking name constraints in X.509 certificates is quadratic in the number of names and name constraints. An attacker who presented a certificate chain which contained a very large number of names in the SubjectAlternativeName, signed by a CA certificate which contained a large number of name constraints, could cause a denial of service. The problem has been addressed in Botan 3.5.0 and a partial backport has also been applied and is included in Botan 2.19.5.

MediumCVSS 5.3 · v3.1—No exploit Fix available
Published
Jul 8, 2024
Updated
Jun 17, 2026
EPSS
0.8% · 58th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.8%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
5.3
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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.

Follow CVE-2024-34702

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

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.

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Affected 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.

VendorProduct
randombitbotan

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • randombit botan

    • < 2.19.5, >= 3.0.0, < 3.5.0affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.17botanbefore 2.19.5-r02.19.5-r0
Alpine:v3.21botan3before 3.5.0-r03.5.0-r0
Debian:12botanbefore 2.19.3+dfsg-1+deb12u12.19.3+dfsg-1+deb12u1
Debian:13botanbefore 2.19.5+dfsg-12.19.5+dfsg-1
openSUSE:Leap 15.5Botanbefore 2.19.5-bp155.2.3.12.19.5-bp155.2.3.1
openSUSE:TumbleweedBotanbefore 2.19.5-1.12.19.5-1.1
SUSE:Package Hub 15 SP5Botanbefore 2.19.5-bp155.2.3.12.19.5-bp155.2.3.1

Same product

randombit: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-118769Botan: Integer overflow when reporting block size in FFI can cause memory corruption
    36Monitor
  • CVE-2024-34703Botan Vulnerable to Denial of Service Due to Overly Large Elliptic Curve Parameters
    30Monitor
  • CVE-2026-118765Botan: AutoSeeded_RNG can become reinitialized from predictable data after clearing state
    29Monitor

Published before and after this one in the same product

  • Later →CVE-2026-118766Oct 29, 2026 · Botan: Online OCSP redirects enable blind requests to internal HTTP services
    24Monitor
  • Later →CVE-2026-118767Oct 29, 2026 · Botan: Python binding bcrypt APIs truncate passwords containing embedded NULs
    19Monitor
  • Later →CVE-2026-118768Oct 29, 2026 · Botan: CLI utility `ocsp_check` accepts unauthenticated responses
    23Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:botan2.19.5-r0 · Alpine:v3.17Package registry (OSV)
alpine:botan33.5.0-r0 · Alpine:v3.21Package registry (OSV)
debian:botan2.19.3+dfsg-1+deb12u1 · Debian:12Package registry (OSV)
opensuse:Botan2.19.5-bp155.2.3.1 · openSUSE:Leap 15.5Package registry (OSV)
suse:Botan2.19.5-bp155.2.3.1 · SUSE:Package Hub 15 SP5Package 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.

No history yet (it accumulates with the daily EPSS job).

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-347038 days apartBotan Vulnerable to Denial of Service Due to Overly Large Elliptic Curve Parameters
    30Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-405 · Asymmetric Resource Consumption (Amplification)

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

nvd-secondary

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 (12 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records