Adobe Flash Player Stack-based Buffer Overflow Vulnerability

Adobe Flash Player versions 29.0.0.171 and earlier have a Stack-based buffer overflow vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.

CheckOps priority index

5.7/10 Patch within 7 days

Severity7.8

Probability2.4

Exploitation3/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 24.4% −0.6 pts in 7 days

CVSS 3.1 7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:

Exploited for 1,625 days 23 May 2022

CISA due date 13 Jun 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

KEV catalog (CISA)23 May 2022
Exploited in EUVD (ENISA)23 May 2022
Used by ransomwareno
EPSS above 10 %24.4%
No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: The impacted product is end-of-life and should be disconnected if still in use.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Affected products

Adobe Flash Player 29.0.0.171 and earlier versionsFlash Player

Affected versions

Adobe Flash Player 29.0.0.171 and earlier versions

Weaknesses (CWE)

CWE-787

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

09 Jul 2018
Published
23 May 2022
Exploitation reported (ENISA)
23 May 2022
Added to the KEV catalog
13 Jun 2022
CISA remediation due date
26 Sept 2026
EPSS peak: 25.1%

References

Other exploited vulnerabilities from the same vendor

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