What is CVE-2020-15173?

CVE-2020-15173 is a high-severity vulnerability in Accel-Ppp, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.2/10. Published 2020-09-09.

How severe is CVE-2020-15173?

High severity. CVSS v3 base score is 8.2 out of 10.

Is CVE-2020-15173 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Accel-Ppp

CVE-2020-15173

In ACCEL-PPP (an implementation of PPTP/PPPoE/L2TP/SSTP), there is a buffer overflow when receiving an l2tp control packet ith an AVP which type is a string and no hidden flags, length set to less than 6. If your application is used in open networks or there are untrusted nodes in the network it is highly recommended to apply the patch. The problem was patched with commit 2324bcd5ba12cf28f47357a8f03cd41b7c04c52b As a workaround changes of commit 2324bcd5ba12cf28f47357a8f03cd41b7c04c52b can be applied to older versions.

Vulnerability class: Buffer Overflow

EPSS: 0.012 (64.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

Affected products

Accel-ppp — versions <= 1.12.0-92-g38b6104

Weakness classification (CWE)

Public proof-of-concept exploits

404notf0und/CVE-Flow

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-15173?: CVE-2020-15173 is a high-severity vulnerability in Accel-Ppp, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.2/10. Published 2020-09-09.
How severe is CVE-2020-15173?: High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2020-15173 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.