by Kastro
Paper/Archive/CVE-2020-37124

CVE-2020-37124

4Mhz B64dec — B64dec 1.1.2 - Buffer Overflow (SEH Overflow + Egg Hunter)

EPSS 0.4%public exploitCVSS 9.8
critical.is priorityof 100
47
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 35.3.353 × 207.1Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

B64dec 1.1.2 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting Structured Exception Handler (SEH) with crafted input. Attackers can leverage an egg hunter technique and carefully constructed payload to inject and execute malicious code during base64 decoding process.

Affected

ProductAffectedFixed inSource
B64dec1.1.2–CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)8.4CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitexploit-db.com/exploits/48317ref4mhz.de/b64dec.htmlwriteupvulncheck.com/advisories/bdec-buffer-overflow-seh-overflow-egg-hunter