CVE-2019-3561: facebook hhvm
CVSS: 9.8v3.0CriticalModified
AliasesUBUNTU-CVE-2019-3561
Published 29-04-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-3561 is a critical (CVSS 9.8) vulnerability in facebook hhvm. EPSS estimates a 1.71% chance of exploitation in the next 30 days, higher than 77% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.0 (NVD)EPSS score
1.71%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 29-04-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory. This affects all supported versions of HHVM (4.0.3, 3.30.4, and 3.27.7 and below).
CVSS metrics
3 scores · 2 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.71%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
0.00 pp
From 1.71% on 20-09-2026
20-09-202620-10-2026
EPSS score1.71%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
- CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
Affected systems
Facebook1 product
- hhvm4.0.4 | ≥ 4.0.0, < unspecified | 3.30.5 | ≥ 3.30.0, < unspecified | 3.27.8 | ≥ unspecified, < 3.27.8 | ≤ 3.27.7 | ≥ 3.28.0, ≤ 3.30.4 | ≥ 4.0.0, ≤ 4.0.3
Ubuntu1 product
- hhvmAll versions (No fix recorded)
2 vendors · 2 products
References
4 links- github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75X Refsource MISCREPORTThird Party Advisory