CVE-2020-15503: LibRaw before 0.20-RC1 lacks a thumbnail size range check.
Noroxi assessment
Priority: Monitor (action score 31/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 3.6% (FIRST EPSS); higher than 89.6% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Azure Linux 3.0 ARM 0.19.5-5; Azure Linux 3.0 x64 0.19.5-5.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Azure Linux 3.0 ARM 0.19.5-5; Azure Linux 3.0 x64 0.19.5-5 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
LibRaw before 0.20-RC1 lacks a thumbnail size range check. This affects decoders/unpack_thumb.cpp, postprocessing/mem_image.cpp, and utils/thumb_utils.cpp. For example, malloc(sizeof(libraw_processed_image_t)+T.tlength) occurs without validating T.tlength.
- Published
- Jul 2, 2020
- Updated
- Jun 16, 2026
- EPSS
- 3.6% · 89th percentile
- CWE
- CWE-20
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.6%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| libraw | libraw | cpe:2.3:a:libraw:libraw |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux10.0
- fedoraproject fedora31
- fedoraproject fedora32
- libraw librawup to 0.19.5 inclusive
- libraw libraw0.20
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.12 | libraw | before 0.19.5-r1 | 0.19.5-r1 |
| Debian:10 | libraw | before 0.19.2-2+deb10u2 | 0.19.2-2+deb10u2 |
| Debian:12 | libraw | before 0.20.0-4 | 0.20.0-4 |
| openSUSE:Leap 15.1 | libraw | before 0.18.9-lp151.4.3.1 | 0.18.9-lp151.4.3.1 |
| openSUSE:Leap 15.2 | libraw | before 0.18.9-lp152.5.3.1 | 0.18.9-lp152.5.3.1 |
| openSUSE:Tumbleweed | libraw | before 0.20.2-4.1 | 0.20.2-4.1 |
| SUSE:Linux Enterprise Software Development Kit 12 SP5 | libraw | before 0.15.4-33.1 | 0.15.4-33.1 |
| SUSE:Linux Enterprise Workstation Extension 15 SP1 | libraw | before 0.18.9-3.11.1 | 0.18.9-3.11.1 |
Same product
libraw: all recordsOther highest-scoring records for the same primary product.
- CVE-2015-8367The phase_one_correct function in Libraw before 0.17.1 allows attackers to cause memory errors and possibly execute arbitrary code, related 41Plan
- CVE-2015-8366Array index error in smal_decode_segment function in LibRaw before 0.17.1 allows context-dependent attackers to cause memory errors and poss41Plan
- CVE-2017-14265A Stack-based Buffer Overflow was discovered in xtrans_interpolate in internal/dcraw_common.cpp in LibRaw before 0.18.3.40Plan
Published before and after this one in the same product
- ← EarlierCVE-2018-5819Feb 20, 2019 · An error within the "parse_sinar_ia()" function (internal/dcraw_common.cpp) within LibRaw versions prior to 0.19.1 can be exploited to exhau31Monitor
- ← EarlierCVE-2020-15365Jun 28, 2020 · LibRaw before 0.20-Beta3 has an out-of-bounds write in parse_exif() in metadata\exif_gps.cpp via an unrecognized AtomName and a zero value o26Monitor
- Later →CVE-2020-24889Sep 16, 2020 · A buffer overflow vulnerability in LibRaw version < 20.0 LibRaw::GetNormalizedModel in src/metadata/normalize_model.cpp may lead to context-31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Azure Linux 3.0 ARM | 0.19.5-5 · LibRaw | Microsoft (MSRC) |
| Azure Linux 3.0 x64 | 0.19.5-5 · LibRaw | Microsoft (MSRC) |
| alpine:libraw | 0.19.5-r1 · Alpine:v3.12 | Package registry (OSV) |
| debian:libraw | 0.20.0-4 · Debian:12 | Package registry (OSV) |
| opensuse:libraw | 0.18.9-lp151.4.3.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| suse:libraw | 0.15.4-33.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-22-0552 · Aug 15, 2022(RedHat Güvenlik Güncellemesi)
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (11 more)Show less
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00001.html
- github.com/LibRaw/LibRaw/commit/20ad21c0d87ca80217aee47533d91e633ce1864d
- github.com/LibRaw/LibRaw/compare/0.20-Beta3...0.20-RC1
- lists.debian.org/debian-lts-announce/2022/11/msg00042.html
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7HM2DS6HA4YZREI3BYGS75M6D76WMW62/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSXAJKZ4VNDYVQULJNY4XDPWHIJDTB4P/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DNGDWTO45TU4KGND75EUUEGUMNSOYC7H/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QCVKD7PTO7UQAVUTBHJAKBKYLPQQGAMZ/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y34ALB34P3NGQXLF7BG7R6DGRX6XL2JN/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZETDVPZQWZWVGIG6JTIEKP5KPVMUE7Y/
- www.libraw.org/news/libraw-0-20-rc1
Vendor advisories and official records. Exploit/PoC links are deliberately left out.