CVE-2018-20783: opensuse leap Out-of-bounds Read
Vulnerability summary
CVE-2018-20783 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in opensuse leap. EPSS estimates a 5.66% chance of exploitation in the next 30 days, higher than 92.9% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 15 · Related 10Timeline
- 21-02-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In PHP before 5.6.39, 7.x before 7.0.33, 7.1.x before 7.1.25, and 7.2.x before 7.2.13, a buffer over-read in PHAR reading functions may allow an attacker to read allocated or unallocated memory past the actual data when trying to parse a .phar file. This is related to phar_parse_pharfile in ext/phar/phar.c.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
5.66%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
No change 0.00 pp
From 5.66% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (bugs.php.net)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu3 products
- php5< 5.5.9+dfsg-1ubuntu4.29+esm2
- php7.0< 7.0.33-0ubuntu0.16.04.1
- php7.2< 7.2.15-0ubuntu0.18.04.1
Alpine1 product
- php7< 7.2.13-r0 | < 7.1.29-r0
Opensuse1 product
- leapEOL42.3
Php1 product
- php< 5.6.39 | ≥ 7.0.0, < 7.0.33 | ≥ 7.1.0, < 7.1.25 | ≥ 7.2.0, < 7.2.13
4 vendors · 6 products
References
14 links- lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory