CVE-2010-3870: canonical ubuntu_linux Improper Input Validation

Modified

Published 12-11-2010Last modified 07-08-2024

Vulnerability summary

CVE-2010-3870 is a medium (CVSS 6.8) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 11.28% chance of exploitation in the next 30 days, higher than 95.9% of scored vulnerabilities. 7 public exploits are recorded.

Priority

Prioritiseweaponized exploit

Weaponized exploit (exploit-database, 11-05-2009)

Source freshness unavailable

How is this decided?

CVSS score

6.8/10

010

Medium · v2.0 (NVD)

EPSS score

11.28%

0%100%

Medium · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits7reference, exploit-database

Advisory lineage

Upstream 0 · Downstream 3

DSA-2195-1 RHSA-2010:0919 RHSA-2011:0195

Timeline

12-11-2010
PublishedVulnerability first disclosed.
07-08-2024
Last modifiedVulnerability information updated.

Description

The utf8_decode function in PHP before 5.3.4 does not properly handle non-shortest form UTF-8 encoding and ill-formed subsequences in UTF-8 data, which makes it easier for remote attackers to bypass cross-site scripting (XSS) and SQL injection protection mechanisms via a crafted string.

CVSS metrics

1 score · 1 source · 1 version

v2.06.8

EPSS trend

Probability

11.28%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

No change 0.00 pp

From 11.28% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

7 found

referenceUnverified
Exploit Reference (bugs.php.net)
Maturity: unknown
referenceUnverified
Exploit Reference (blackhat.com)
Maturity: unknown
referenceUnverified
Exploit Reference (bugs.php.net)
Maturity: unknown

Show all 7 exploits

referenceUnverified
Exploit Reference (sirdarckcat.blogspot.com)
Maturity: unknown
referenceUnverified
Exploit Reference (us2.php.net)
Maturity: unknown
referenceUnverified
Exploit Reference (acunetix.com)
Maturity: unknown
exploit-databaseremotephpVerified
PHP 5.3.2 - 'xml_utf8_decode()' UTF-8 Input Validation
Maturity: weaponized

Weaknesses

CWE · root cause

CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Canonical1 product

ubuntu_linuxEOL6.06 | 8.04 | 9.10 | 10.04 | 10.10

Php1 product

php< 5.2.14 | ≥ 5.3.0, < 5.3.4

2 vendors · 2 products

References

33 links

www.openwall.com/lists/oss-security/2010/11/02/11Mailing ListX Refsource MLISTThird Party Advisory
www.vupen.com/english/advisories/2011/0077VDB EntryX Refsource VUPENThird Party Advisory
lists.fedoraproject.org/pipermail/package-announce/2011-January/052836.htmlVendor AdvisoryX Refsource FEDORAMailing ListThird Party Advisory
secunia.com/advisories/42812Third Party AdvisoryX Refsource SECUNIA
marc.info?l=bugtraq&m=133469208622507&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
www.openwall.com/lists/oss-security/2010/11/02/2Mailing ListX Refsource MLISTThird Party Advisory
www.redhat.com/support/errata/RHSA-2011-0195.htmlVendor AdvisoryX Refsource REDHATThird Party Advisory
www.openwall.com/lists/oss-security/2010/11/02/4Mailing ListX Refsource MLISTThird Party Advisory
www.securitytracker.com/id?1024797VDB EntryX Refsource SECTRACKThird Party Advisory
lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory

Show all 33 references

bugs.php.net/bug.php?id=49687X Refsource CONFIRMExploitVendor Advisory
www.blackhat.com/presentations/bh-usa-09/VELANAVA/BHUSA09-VelaNava-FavoriteXSS-SLIDES.pdfX Refsource MISCExploitThird Party Advisory
lists.apple.com/archives/security-announce/2011/Mar/msg00006.htmlVendor AdvisoryX Refsource APPLEMailing ListThird Party Advisory
www.ubuntu.com/usn/USN-1042-1Vendor AdvisoryX Refsource UBUNTUThird Party Advisory
www.openwall.com/lists/oss-security/2010/11/02/6Mailing ListX Refsource MLISTThird Party Advisory
www.redhat.com/support/errata/RHSA-2010-0919.htmlVendor AdvisoryX Refsource REDHATThird Party Advisory
bugs.php.net/bug.php?id=48230X Refsource MISCExploitVendor Advisory
www.vupen.com/english/advisories/2011/0021VDB EntryX Refsource VUPENThird Party Advisory
www.php.net/ChangeLog-5.phpX Refsource CONFIRMVendor Advisory
sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.htmlX Refsource MISCExploitThird Party Advisory
www.openwall.com/lists/oss-security/2010/11/02/1Mailing ListX Refsource MLISTThird Party Advisory
secunia.com/advisories/42410Third Party AdvisoryX Refsource SECUNIA
www.mandriva.com/en/security/advisories?name=MDVSA-2010:224Vendor AdvisoryX Refsource MANDRIVAThird Party Advisory
lists.fedoraproject.org/pipermail/package-announce/2011-January/052845.htmlVendor AdvisoryX Refsource FEDORAMailing ListThird Party Advisory
www.openwall.com/lists/oss-security/2010/11/03/1Mailing ListX Refsource MLISTThird Party Advisory
svn.php.net/viewvc?view=revision&revision=304959X Refsource CONFIRMPatchVendor Advisory
www.vupen.com/english/advisories/2011/0020VDB EntryX Refsource VUPENThird Party Advisory
www.openwall.com/lists/oss-security/2010/11/02/8Mailing ListX Refsource MLISTThird Party Advisory
www.securityfocus.com/bid/44605VDB EntryX Refsource BIDThird Party Advisory
us2.php.net/manual/en/function.utf8-decode.phpX Refsource MISCExploitVendor Advisory
www.acunetix.com/blog/web-security-articles/security-risks-associated-with-utf8_decode/X Refsource MISCExploitThird Party Advisory
www.vupen.com/english/advisories/2010/3081VDB EntryX Refsource VUPENThird Party Advisory
support.apple.com/kb/HT4581X Refsource CONFIRMThird Party Advisory