Description
Crypt::PBKDF2 versions before 0.261630 for Perl are vulnerable to timing attacks.
These versions use Perl's built-in eq comparison. Discrepancies in timing could be used to guess the underlying derived-key.
Basic information
- Type
- unreviewed
- Severity
- medium
- Advisory on GitHub
- Open advisory ↗
- Repository advisory
- —
- Source code
- Not specified
- Published (advisory)
- 2026-06-12 15:30:34 UTC
- Updated
- 2026-06-12 18:32:56 UTC
- NVD published
- 2026-06-12
EPSS Score
| Score |
Percentile |
|
0.03%
|
9.34% |
CVSS Scores
| Base score |
Version |
Severity |
Vector |
|
5.9
|
3.1 |
—
|
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Click to expand
- Attack vector (AV:N)
- Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
- Attack complexity (AC:H)
- Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
- Privileges required (PR:N)
- No account or special rights needed—anonymous or random user is enough.
- User interaction (UI:N)
- Nobody has to click “OK” or open a trap file; it can work without a victim helping.
- Scope (S:U)
- Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
- Confidentiality (C:H)
- Serious risk that confidential data gets exposed in a big way.
- Integrity (I:N)
- Data isn’t meaningfully altered or forged.
- Availability (A:N)
- Service keeps running; no real outage angle.
|
CWEs
| CWE id |
Name |
|
CWE-208
|
Observable Timing Discrepancy |
cvelogic
Threat Intelligence