CVE-2009-2694Adium Memory Corruption
The msn_slplink_process_msg function in libpurple/protocols/msn/slplink.c in libpurple, as used in Pidgin (formerly Gaim) before 2.5.9 and Adium 1.3.5 and earlier, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application…
Published Aug 21, 2009 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2009-2694, DSA-1870-1
Key Facts
Patch immediately- CVE-2009-2694 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Adium, Pidgin, finch-devel (suse) and 8 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 20% probability of exploitation in the next 30 days.
- Fixed versions are available, including Adium 1.3.5, finch 2.11.0-4.1, finch-devel 2.11.0-4.1.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
20%
Higher than 97.4% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
43/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2009-2694
- advisoryRHSA-2009:1218
- advisory36384
- advisory36392
- advisory36401
- advisoryRHSA-2009:1218
Description
The msn_slplink_process_msg function in libpurple/protocols/msn/slplink.c in libpurple, as used in Pidgin (formerly Gaim) before 2.5.9 and Adium 1.3.5 and earlier, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) by sending multiple crafted SLP (aka MSNSLP) messages to trigger an overwrite of an arbitrary memory location.
NOTE: this issue reportedly exists because of an incomplete fix for CVE-2009-1376.
Affected Products
53 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| AdiumAdium | 1.2.7, 1.3, 1.3.1, 1.3.2, 1.3.3, 1.3.4 | 1.3.5 |
| PidginPidgin | 2.0.0, 2.0.1, 2.0.2, 2.1.0, 2.1.1, 2.2.0, 2.2.1, 2.2.2 | 2.5.8 |
| finch-develsuse | See advisory | 2.11.0-4.1 |
| finchsuse | See advisory | 2.11.0-4.1 |
| libpurple-branding-upstreamsuse | See advisory | 2.11.0-4.1 |
Patched Releases
Adium
1.3.5
finch
2.11.0-4.1
finch-devel
2.11.0-4.1
libpurple
2.11.0-4.1
libpurple-branding-upstream
2.11.0-4.1
libpurple-devel
2.11.0-4.1
libpurple-lang
2.11.0-4.1
libpurple-plugin-sametime
2.11.0-4.1
libpurple-tcl
2.11.0-4.1
Pidgin
0:1.5.1-4.el3, 0:2.5.9-1.el4, 0:2.5.9-1.el5, 2.11.0-4.1, 2.4.3-4lenny3, 2.5.9-1, 2.5.8
pidgin-devel
2.11.0-4.1
Timeline
Publicly disclosed
Aug 21, 2009
Last updated
Aug 4, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-228 Improper Handling of Syntactically Invalid Structure
- CWE-399
- CWE-823 Use of Out-of-range Pointer Offset
References
- advisorysecurity-tracker.debian.org · CVE-2009-2694
- advisoryRHSA-2009:1218
- advisory36384
- advisory36392
- advisory36401
FAQ
Common Questions.
The msn_slplink_process_msg function in libpurple/protocols/msn/slplink.c in libpurple, as used in Pidgin (formerly Gaim) before 2.5.9 and Adium 1.3.5 and earlier, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) by sending multiple crafted SLP (a…
Affected: Adium versions 1.2.7, 1.3, 1.3.1, 1.3.2, 1.3.3, 1.3.4; Pidgin versions 2.0.0, 2.0.1, 2.0.2, 2.1.0, 2.1.1, 2.2.0, 2.2.1, 2.2.2; finch-devel (suse), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Adium 1.3.5, finch 2.11.0-4.1, finch-devel 2.11.0-4.1.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
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