[Secure-testing-team] Bug#870266: chicken: CVE-2017-11343

[Salvatore Bonaccorso]

Source: chicken
Version: 4.8.0-1
Severity: important
Tags: security upstream patch fixed-upstream

Hi,

the following vulnerability was published for chicken.

CVE-2017-11343[0]:
| Due to an incomplete fix for CVE-2012-6125, all versions of CHICKEN
| Scheme up to and including 4.12.0 are vulnerable to an algorithmic
| complexity attack. An attacker can provide crafted input which, when
| inserted into the symbol table, will result in O(n) lookup time.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2017-11343
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11343
[1] http://lists.nongnu.org/archive/html/chicken-announce/2017-07/msg00000.html
[2] http://lists.gnu.org/archive/html/chicken-hackers/2017-06/txtod8Pa1wGU0.txt

Regards,
Salvatore