CVE-2017-9334
An incorrect "pair?" check in the Scheme "length" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.54%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An incorrect "pair?" check in the Scheme "length" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that calls "length" on it.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.54% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- call-cc/chicken
- Source
- cve@mitre.org
References
- http://lists.nongnu.org/archive/html/chicken-announce/2017-05/msg00000.htmlPatch, Third Party Advisory
- http://lists.nongnu.org/archive/html/chicken-hackers/2017-05/msg00099.htmlPatch, Third Party Advisory
- http://lists.nongnu.org/archive/html/chicken-announce/2017-05/msg00000.htmlPatch, Third Party Advisory
- http://lists.nongnu.org/archive/html/chicken-hackers/2017-05/msg00099.htmlPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.