CVE-2019-11039: Out-of-bounds read in iconv.c
Vulnerability summary
CVE-2019-11039 is a critical (CVSS 9.1) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 3.13% chance of exploitation in the next 30 days, higher than 87.8% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 4.2, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 17 · Related 10Timeline
- 18-06-2019PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
Description
Function iconv_mime_decode_headers() in PHP versions 7.1.x below 7.1.30, 7.2.x below 7.2.19 and 7.3.x below 7.3.6 may perform out-of-buffer read due to integer overflow when parsing MIME headers. This may lead to information disclosure or crash.
CVSS metrics
7 scores · 4 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- OSV · AlpineEcosystem advisory · calculated9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- NVDNIST4.2MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L
- OSV · UbuntuEcosystem advisory · calculated9.1CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HDiffers
EPSS trend
Probability
3.13%
Chance of exploitation in the next 30 days
Percentile
88%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.13% 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 cause- CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
- CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
Affected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu3 products
- php5< 5.5.9+dfsg-1ubuntu4.29+esm3
- php7.0< 7.0.33-0ubuntu0.16.04.5
- php7.2< 7.2.19-0ubuntu0.18.04.1
Alpine1 product
- php7< 7.2.19-r0 | < 7.1.30-r0 | < 7.2.21-r0
Debian1 product
- debian_linuxEOL9.0 | 10.0
Opensuse1 product
- leapEOL15.0 | 15.1
Php1 product
- php≥ 7.1.0, < 7.1.30 | ≥ 7.2.0, < 7.2.19 | ≥ 7.3.0, < 7.3.6
Php group1 product
- php7.1.30 | 7.2.19 | 7.3.6
Redhat1 product
7 vendors · 9 products
References
13 links- lists.opensuse.org/opensuse-security-announce/2019-07/msg00029.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
